Questions, answered plainly

16:9 is widescreen and the PowerPoint default; 4:3 is the older, squarer shape. Real pixel and inch sizes, where 4:3 still fits, and what breaks on a switch.

4x3 resolution sizes: 800 x 600, 1024 x 768, 1440 x 1080 and 1600 x 1200 pixels, the 10 x 7.5 inch PowerPoint standard slide, and when 4:3 still makes sense.

An agenda slide helps when a deck is long, has several presenters or ends in a decision, and wastes a slide in a short talk. When to use one, and alternatives.

An image PPTX is one picture per slide. An editable PPTX rebuilds text, tables and charts as real PowerPoint objects you can edit after export.

How many slides in a pitch deck: 10 to 15 for a first meeting, with detail moved to an appendix. The slides that must be there, a slide by slide plan, and why.

A one pager puts a company's facts on a single page; a pitch deck tells its story over ten or more slides. Which to send, to whom, and at what stage.

PDF vs PPTX for sharing a presentation: a fixed page anyone can open, or an editable file that depends on the reader's software. How to choose between them.

PowerPoint slide size in pixels: 16:9 at 1920 x 1080, 1280 x 720 or 3840 x 2160, and 13.333 x 7.5 inches. Google Slides sizes and which pixels to choose.

Should slides have page numbers? Numbers let people ask about a specific slide and find it again later. When to number, when to skip it, and where they go.

Slide transition vs animation: one moves between slides, the other moves objects within a slide. How each works, when to use it and the mistakes to avoid.

Speaker notes are short cues; a script is every word you plan to say. The trade offs, the risk of reading aloud, and how to choose for your next talk.

One idea per slide means each slide makes a single point the audience can grasp at a glance. Why it works, when it fails, and how 6x6 and 1-6-6 compare.

A slide role is the job a slide does: cover, agenda, metrics, comparison, timeline. Twenty six of them, each with its own fields and layouts.

Speaker notes are what you say, stored per slide and never shown on it. Where they appear, what they do not travel with, and who else can read them.

What goes on a team slide: names, roles, faces and one relevant fact per person, and how the slide changes from a pre seed pitch to a Series B deck.

What goes on a title slide: the title, who is presenting, the date and one line of context. What changes for a pitch, a conference talk, a thesis or a proposal.

What is a build in a presentation? A slide that reveals its parts one at a time. Three ways to make one, and when showing everything at once works better.

A call to action slide asks the audience to do one specific thing after the talk, with a date and a name. What it says for investors, customers and teams.

A competitive landscape slide shows the alternatives a customer has and where a company fits. When to use a 2x2 matrix, a feature table or a petal chart.

A data room is the shared folder investors open after the pitch to check the company in detail. What goes in it, where the deck fits, and when you need one.

A ghost deck is a skeleton presentation of slide titles and rough placeholders, built to agree the story before the analysis is done. How consultants use one.

A go to market slide shows who a company sells to first, through which channels, at what price and acquisition cost. How it differs from a marketing plan.

A hockey stick chart shows a long flat line that suddenly turns steeply upward. Why forecasts drawn that way are doubted, and what makes the curve credible.

A key takeaways slide states the few things the audience should remember, usually three to five. How it differs from a summary or closing slide.

A keynote presentation is the headline talk that sets the theme of an event. How it differs from a breakout or panel, how it is built, and what its slides do.

A leave behind deck is the version left with an audience after a meeting, written to be read without the presenter. How it differs from the deck you present.

A lightning talk is a presentation of five minutes or less on one idea, usually one of several in a row. Its origin, how many slides fit, and how to prepare.

A pitch deck is a short presentation that makes the case for investing in a company or buying from it. How it differs from a business plan and a one pager.

What is a PPTX file? The PowerPoint format since 2007, a zipped bundle of XML parts. How it differs from PPT, Keynote and ODP, and what opens each one.

A presentation recording captures slides and voice as a video people watch later. What it is, how it works, when to record one and what makes it hard to watch.

A presentation share link opens a deck in the browser instead of sending a copy. What it controls, what it exposes, and when a file is the better choice.

A presentation theme is the colours, fonts and backgrounds applied to every slide at once. Theme against palette against colour mode, and how to choose one.

A product roadmap slide shows planned direction and priorities; a timeline slide shows dated events. Now next later, quarterly and Gantt formats compared.

What is a QBR: a meeting every three months that reviews results against goals and agrees the next quarter. Customer and internal QBRs, and how an EBR differs.

A read deck is a presentation built to be read on a screen or page, not projected. How it differs from a presented deck and a memo, and when each is right.

A section divider slide marks the start of a new part of a presentation with a title and little else. Why it helps, and how it differs from an agenda slide.

A slide layout decides where the boxes sit on one slide. How it differs from a template and a theme, what changes when you swap each, and how to pick one.

A slide master is the parent slide every slide inherits fonts, colours, logos and placeholders from. How it relates to layouts and themes, and what replaces it.

A storyline is the sequence of slide headlines that carries a presentation's argument, written before any slide is designed. How to write one, step by step.

A teaser deck is a 3 to 5 slide version of a pitch sent cold to earn a meeting. What it keeps, what it leaves out, and when to send the full deck instead.

What is a thesis defence: the oral examination of a research degree. How it runs in Australia, the UK and the US, who attends, how long it lasts and slides.

A use of funds slide shows where a raise will be spent, by category and over time, and what milestone it reaches. A worked $4M split and the common mistakes.

An action title is a slide headline that states the conclusion, not the topic. Six before and after rewrites, where the habit comes from, and how to write one.

What is an all hands meeting: the whole company together for updates, results, new faces and questions. How it differs from a town hall and an offsite.

An executive summary slide puts the conclusion, the key numbers and the decision needed at the front of a deck. How it differs from agenda and takeaway slides.

What is an RFP response: the proposal a supplier submits to win a contract. How it differs from answering an RFQ or RFI, and what a scored response contains.

An assertion evidence slide puts a full sentence headline over a chart or image instead of bullets. The research behind it, an example and how to write one.

What is demo day: the event that ends an accelerator programme, where each startup pitches investors in a few minutes. Pitch length, slides and what to ask for.

Kiosk mode plays a presentation full screen, advancing on timings and looping with no presenter. How it works in slide tools, and what to do when there is none.

MECE means grouping ideas so they do not overlap and nothing is missing. Where Barbara Minto's term comes from, three worked examples and its use in decks.

Pecha Kucha is 20 images shown for 20 seconds each, advancing on their own, 6 minutes 40 seconds in all. Its origin, the rules, and how it differs from Ignite.

Presenter view puts your notes, the next slide and a timer on your screen while the audience sees only the slide. How it works, and a simpler pop out option.

Storyboarding a presentation means sketching every slide, its headline and its visual, on paper or sticky notes before building it. How and why to do it.

TAM, SAM and SOM are three nested market sizes: everything, what you can serve, and what you can win. A worked example, both methods, and the slide itself.

Guy Kawasaki's 10 20 30 rule: ten slides, twenty minutes, no font smaller than thirty points. His ten slides mapped against a real seed deck and slide roles.

The pen tool in a presentation lets you draw, highlight or point on a slide while presenting. How the tools differ, when marks help and when to skip them.

The pyramid principle, from Barbara Minto, puts the main point first and groups supporting arguments beneath it. SCQA explained with an example deck outline.

The rule of three groups ideas in threes because three items are easy to follow and remember. The memory research behind it, and when five or seven work better.

Traction is evidence that people want what a startup sells: revenue, growth, retention, or before revenue, pilots and waitlists. What counts at each stage.

Unit economics is the revenue and cost of one customer or one sale. How CAC, LTV, payback and contribution are worked out, and how to put them on one slide.

The last slide stays on screen longest, so a bare thank you wastes it. Ask, summary, contact or questions: which closing slide fits which kind of talk.

An A4 flyer is 2480 x 3508 pixels at 300 DPI, 1240 x 1754 at 150 DPI and 595 x 842 at 72 DPI. A4 is 210 x 297 mm or 8.27 x 11.69 inches.

A4 size in pixels: 2480 x 3508 at 300 DPI, 1240 x 1754 at 150 DPI and 595 x 842 at 72 DPI. Which resolution to use for print, PDF and screens.

A5 vs A6 flyer: A5 is 148 by 210 mm, half of A4, and A6 is 105 by 148 mm, half of A5. Pixel sizes at 300 DPI, how much each holds and when to choose which.

B paper sizes from B0 to B10 in mm and inches, B4 and B5 in pixels at 300 DPI, the JIS B differences, and where B sizes are used for books and posters.

CMYK vs RGB: RGB mixes light for screens, CMYK mixes ink for paper, and ink cannot reach every screen colour. What shifts in print and how to limit it.

Desktop wallpaper sizes: 1920 x 1080, 2560 x 1440 and 3840 x 2160, plus MacBook Air and Pro resolutions, and how to make one image fit several screens.

Digital vs offset printing: toner or inkjet with no plates, against inked plates and a blanket. How quantity, colour and turnaround decide a flyer job.

Discord banner size: server banners are 16:9, 960 x 540 per Snappa or 1920 x 1080 per Linearity; profile banners 600 x 240 or 680 x 240 with Nitro, under 10 MB.

Email header size: 600 pixels wide, the standard email width, and about 150 to 200 pixels tall, exported at 2x (1200 px) for sharp retina screens.

Email signature banner size: about 600 x 80 to 600 x 100 pixels, under 40 KB, made at 2x for sharp screens, plus logo sizes and Gmail's 10,000 character cap.

Etsy banner size: the big shop banner is 3360 x 840 pixels (4:1), the mini banner 1200 x 160, and the shop icon 500 x 500, per Printify and Linearity guides.

F pattern vs Z pattern: one is a scanning habit measured by eyetracking, the other a layout convention. Which suits a flyer, a poster and a form.

Facebook ad size: feed images at 4:5, 1440 x 1800, 600 px minimum width, JPG or PNG up to 30 MB; Stories and Reels at 9:16 with Meta's safe margins.

The Facebook cover photo size is 851 x 315 pixels, the fastest loading file, and at least 400 x 150. What phones crop, where the profile picture sits.

Facebook event cover photo size: 1920 x 1005 pixels, about 1.91:1, replacing the older 1920 x 1080. Why smaller images blur and where to keep the text.

Facebook profile picture size: upload a square of at least 320 x 320 pixels. It is cropped to a circle and shown small, so keep faces and logos centred.

Full bleed vs no bleed: colour to the edge of the sheet or a plain border. What each costs, how the file is set up, and why home printers keep a margin.

Google Business Profile photo size: 720 x 720 pixels recommended, 250 x 250 minimum, JPG or PNG between 10 KB and 5 MB, plus how logo and cover photos work.

Google display ad sizes: 300 x 250, 336 x 280, 728 x 90, 970 x 90, 160 x 600, 300 x 600 and 320 x 50, in JPG, PNG or still GIF up to 150 KB.

Hex vs RGB vs HSL: three ways of writing the same screen colour. One brand colour converted across all three, how each is read and when each is easiest to use.

How do QR codes on flyers work? What the pattern stores, static vs dynamic codes, the quiet zone, and how big to print one for the scanning distance.

Instagram ad size: feed ads at 4:5, 1440 x 1800, Story and Reels ads at 9:16, 1440 x 2560, with 125 and 44 character text limits and Meta's safe margins.

Instagram carousel size: 1080 x 1350 for portrait 4:5 slides or 1080 x 1080 for square. The first slide sets the shape for the set, and the grid crop.

Instagram post size in pixels: 1080 x 1080 square, 1080 x 1350 portrait (4:5), 1080 x 566 landscape and 1080 x 1920 for stories and Reels, with ratios.

Instagram profile picture size: upload a 320 x 320 square; it shows as a small circle, about 110 pixels wide on a profile, so the corners are always cut off.

Kerning vs tracking vs leading: the gap in one letter pair, the spacing across a word or line, and the distance between lines, with typical values.

Leaflet vs flyer vs brochure vs pamphlet: a flyer is one flat sheet, a leaflet may fold, a brochure presents in depth. How AU, UK and US usage differs.

Letter vs A4: US Letter is 8.5 by 11 inches, A4 is 210 by 297 mm, narrower and taller. Where each is used and what happens when you print one on the other.

LinkedIn ad size: single image ads at 1200 x 628 (1.91:1), 1200 x 1200 square or 720 x 900 vertical, JPG, PNG or GIF up to 5 MB, with text limits.

LinkedIn banner size: 1584 x 396 pixels (4:1) for a personal profile background, 1512 x 256 for a company Page cover, with the profile photo over the left.

LinkedIn company logo size: 400 x 400 pixels recommended, 268 x 268 minimum, PNG or JPEG up to 3 MB, shown beside every post and job the Page publishes.

LinkedIn post images are 1200 x 627 pixels (1.91:1). Page covers 1512 x 256, profile banners 1584 x 396, ad and carousel sizes, with aspect ratios and limits.

Margin vs padding in design: margin is space outside a box, padding is space inside it, and white space is every empty area. A flyer example of each.

Matte vs gloss paper: gloss makes photos vivid but reflects light, matte cuts glare and takes pen, and silk sits between them. How to choose a finish for print.

Phone wallpaper sizes: iPhone 15 and 16 at 1179 x 2556, Plus and Pro Max at 1290 x 2796, 16 Pro Max at 1320 x 2868, and how to size for Android phones.

Photo print sizes from 6x4 to 20x16 inches in cm, with aspect ratios and the pixels needed at 150 and 300 DPI, and how phone photos crop to each size.

Pinterest pin size is 1000 x 1500 pixels at 2:3. File types, the 20 MB desktop limit, why taller pins get cut off, and video and carousel pin shapes.

PNG vs JPG: PNG compresses without losing detail and supports transparency, JPG shrinks photos by discarding detail. Which suits flyers, posters and print.

Poster vs flyer: a poster is read from across a room, a flyer in the hand. How size, type size, word count and placement change between the two.

Reddit banner size: 1920 x 384 (5:1) for a community banner per Snappa, 1600 x 480 per Reddit's community guide as reported by Moda, under 500 KB, PNG or JPG.

Resolution vs DPI: resolution is an image's pixel count, PPI is how densely those pixels print, DPI is the printer's ink dots. Worked from A5 to A1.

Serif vs sans serif: what the serifs are, what the readability research does and does not show, and which suits flyer headlines, body text and phones.

Social media image sizes for 2026 in pixels and aspect ratios: Facebook cover 851 x 315, LinkedIn post 1200 x 627, X header 1500 x 500 and more.

Common sticker sizes: 2, 3, 4 and 5 inch squares and 1 to 4 inch circles, in mm and pixels at 300 DPI, with die cut, kiss cut and file tips for each.

Threads post size: square 1080 x 1080 or portrait 1440 x 1800 per Sprout Social, an 8 MB image limit, and Meta's 500 character and 5 minute video limits.

Trifold vs Z fold: both split a sheet into six panels, but a trifold rolls one panel inside while a Z fold zigzags like an accordion. Panel widths and uses.

Twitch banner size: profile banner 1200 x 480 (5:2), offline video player banner 1920 x 1080 (16:9), JPEG, PNG or GIF under 10 MB, per streamer guides.

Twitter post size on X: 1600 x 900 for 16:9 images, 1080 x 1080 square, 1080 x 1350 portrait. X's media docs set 5 MB for images and 15 MB for GIFs.

Twitter profile picture size on X: 400 x 400 pixels, square, shown as a circle. Hootsuite lists a 2 MB limit; X's media docs accept JPG, PNG, GIF and WEBP.

Vector vs raster: vector images are drawn from shapes and scale to any size, raster images are grids of pixels with a fixed limit. Formats, uses and print.

What are crop marks: short lines outside the corners of a print file that show where to cut. How they differ from bleed, registration marks and colour bars.

Standard brochure sizes: A4 and letter tri folds, legal tri folds and A3 or 11 x 17 bi folds, with flat and folded sizes, panel widths and pixels at 300 DPI.

What does print ready mean: a file a printer can put on press without fixing it first. The checklist of size, resolution, fonts, bleed and colour, item by item.

What DPI for a flyer: 300 at finished size is the standard print shops ask for, 150 is the floor for photos at arm's length. What it means in pixels for A4.

What is a bifold brochure: one sheet folded once in the middle to make four pages. Bifold against trifold on panels, content, flat and folded sizes, and cost.

What a brand kit is, what goes in one, and how it differs from a full style guide: logo versions, colour roles, fonts and the few rules people actually use.

What is a call to action on a flyer? The one instruction that tells a reader what to do next, the main types with real examples, and how to count responses.

What a colour palette in design is, why every colour needs a role, and how a palette differs from a theme that also sets type and styling.

What is a design template? A reusable starting design with layout, styles and placeholder content. How it differs from a layout and a theme, with examples.

What is a display font? A typeface drawn for headlines and signs, not paragraphs. How to spot one, where it belongs on a flyer, and the size mistakes to avoid.

A gutter in design is the empty space between columns, or the inner margin at the binding. How wide each gutter should be, in mm and pixels.

What is a logo lockup? The fixed arrangement of a brand symbol and name, horizontal and stacked versions, and how to place one on a flyer without distortion.

What is a monogram logo? A logo made from a brand's initials, when a lettermark beats a wordmark or symbol, and how to keep two or three letters readable.

What is a print proof: a preview of a print job you approve before the full run. Soft, hard and press proofs compared on cost, colour accuracy and turnaround.

A print run is the number of copies made in one job. What counts as a short run or a long run, how quantity changes the price, and how many to order.

A stock image is a photo licensed for reuse instead of shot for the job. Royalty free, rights managed and free licences compared, and what each permits.

What is a tear off flyer? A notice with tabs cut along its bottom edge, each carrying the contact, so readers take it with them. Layout, tracking and limits.

What is a type scale? A fixed set of font sizes built from one ratio, how a 1.25 scale works, and how a type ramp keeps a flyer headline and details in order.

What is a WebP image: a web image format, smaller than JPG and PNG at similar quality, with transparency and animation. Where it fits and where it does not.

A3 flyer size is 297 x 420 mm, 29.7 x 42 cm or 11.69 x 16.54 inches. Pixels at 300 DPI, folding A3 to A4, A5 and DL, panels, scoring and paper weight.

A4 poster size is 210 x 297 mm, 21 x 29.7 cm or 8.27 x 11.69 inches, 2480 x 3508 pixels at 300 DPI. Frames, mats, reading distance and type size for A4.

A5 flyer size is 148 x 210 mm, 14.8 x 21 cm or 5.83 x 8.27 inches. Pixels at 72, 150 and 300 DPI, bleed and safe area, and how A5 compares with A4 and DL.

A6 flyer size is 105 x 148 mm, 10.5 x 14.8 cm or 4.13 x 5.83 inches. Pixels at 150 and 300 DPI, bleed, postcard limits and what fits on a card this small.

What alignment in design means, the difference between text alignment and edge alignment, and when to centre a flyer and when to align left.

An AI generated image is a picture a model makes from a text prompt. How it works, who owns it in Australia, the UK and the United States, and labelling.

What is aspect ratio? The proportion of width to height, written as 16:9 or 4:5. How to work one out, the common ratios, and why a mismatch gets cropped.

What is bleed in printing: extra artwork past the trim line so an imperfect cut leaves no white edge. How much to add, how to set it up, and when to skip it.

Business card size by country: 90 x 55 mm in Australia, 3.5 x 2 inches in the US, 85 x 55 mm in the UK. Pixels at 300 DPI, bleed, safe area and type sizes.

What contrast ratio is, how the number is calculated, and the WCAG 2.2 thresholds of 4.5:1 for text and 3:1 for large text, applied to flyers and posts.

DL size is 99 x 210 mm for a flyer (3.9 x 8.27 inches, a third of A4) and 110 x 220 mm for the envelope. DL in cm, inches and pixels at 300 DPI, next to A4.

Door hanger sizes: 4.25 x 11, 3.5 x 8.5 and 4.5 x 11 inches, with a 30 mm hole and slit. Pixels at 150 and 300 DPI, paper weight and how to lay out the top.

Duplex printing puts artwork on both sides of one sheet. How the second side lines up, what it costs against one side, and how to design a back page.

What is font pairing? How to combine a heading font and a body font with enough contrast to read clearly, five pairings that work and the mistakes to avoid.

What is font weight? The 100 to 900 scale behind thin, regular and bold, what each number is called, and how to use weight to build hierarchy on a flyer.

What is gsm paper: grams per square metre, the standard measure of paper weight. Which gsm suits flyers, brochures, posters and cards, from 80 to 350 gsm.

What is lamination in printing: a thin plastic film bonded over a printed sheet. Gloss, matte and soft touch compared, what each is for and when to skip it.

Legal paper size is 8.5 x 14 inches, 216 x 356 mm, 2550 x 4200 pixels at 300 DPI. How it compares with letter, foolscap and A4, and what legal is used for.

What is Pantone: numbered standard colours mixed as spot inks, so a colour prints the same everywhere. Spot against process colour and when each is used.

Pull up banner sizes: 85 x 206 cm, 60 x 166 cm and 118 x 206 cm in Australia, 33 x 81 in in the US. Pixels at 100 and 150 DPI and the hidden base.

Table tent size: 5 x 7, 4 x 6 inch and A6 panels, with two and three panel flat sheets, pixels at 300 DPI and how to keep the second face the right way up.

Tabloid size is 11 x 17 inches, 279 x 432 mm, called ledger when landscape. Pixels at 150 and 300 DPI, how it differs from A3 and letter, and its uses.

What the rule of thirds is, where its grid lines fall on an A4 flyer, how it compares with the golden ratio and centring, and when to break it.

What is the safe area in print: the zone inside the trim line where text and logos will not be cut off. Typical distances, how it relates to trim and bleed.

Standard bookmark size is 2 x 6 inches, about 51 x 152 mm, 600 x 1800 pixels at 300 DPI. Bleed, safe area, paper weight and longer sizes for hardback books.

Greeting card sizes: 5 x 7 inches with an A7 envelope, A6 with a C6 envelope, and A5 and 4.25 x 5.5 inch cards. Flat sheet sizes, pixels at 300 DPI and posting.

Standard menu sizes: A4, letter, legal, A3 or 11 x 17 folded, and narrow DL or 3.75 x 8.25 inch cards. Flat and folded sizes, pixels at 300 DPI and what fits.

Standard postcard size: 6 x 4 inches or A6, 148 x 105 mm. USPS, UPU and Australia Post limits, pixels at 300 DPI and how to lay out the address side.

What is trim size: the finished size of a printed piece after cutting. How it differs from bleed size and the safe area, with the numbers for A4 and A5 flyers.

What visual hierarchy is, the tools that create it, from size and weight to space and position, and how to test whether a flyer leads the eye correctly.

What white space in design is, the difference between micro and macro white space, and why empty areas make a flyer easier to read, not emptier.

What is x height? The height of lowercase letters, why it makes two fonts at one size look different, and which fonts to use small or large on a flyer.

WhatsApp status size: make images and videos 1080 x 1920 at 9:16 to fill a phone screen. WhatsApp publishes no pixel spec, and a status expires after 24 hours.

Widows and orphans in typography are lone lines cut off by a column or page break. What each term means, how a runt differs, and how to fix all three.

The X header size is 1500 x 500 pixels, a 3:1 banner, and the profile photo is 400 x 400. Where the photo covers the header and what to keep in the middle.

18x24 poster size is 45.72 x 60.96 cm with a 3:4 ratio, 2700 x 3600 pixels at 150 DPI. How it compares with A2 and 24x36, and printing an A0 board at 18x24.

24x36 poster size is 60.96 x 91.44 cm with a 2:3 ratio, 3600 x 5400 pixels at 150 DPI. How it compares with A1 and how to print an A0 board at 24x36.

A0 is 841 by 1189 mm and the international standard. 36 by 48 inches is the North American board. They are close but not interchangeable.

A0 size in pixels: 2384 x 3370 at 72 DPI, 4967 x 7022 at 150 DPI and 9933 x 14043 at 300 DPI. Which resolution an A0 poster needs, and file sizes at each.

Abstract vs introduction on a poster: the abstract sums up the whole study, the introduction sets up the question. What each holds and when to drop one.

Cohort vs case control study: a cohort follows people from exposure to outcome, a case control study starts at the outcome and looks back. What each estimates.

Fabric vs paper research poster: fabric folds into a bag and survives travel, paper is cheaper for a single session. Cost, colour, lead time and reuse compared.

How to present a null result: give the estimate and its interval, say which effects it rules out, and word it honestly on a research poster.

How to show a confidence interval on a chart: error bars, what SD, SE and CI bars mean, the overlap rules of eye, and what to do when a chart has no error bars.

Portrait suits a text heavy study and a narrow stand. Landscape suits a wide figure and a four column reading order. What decides it, and who to ask.

Poster frame sizes in cm and inches: 21 x 30, 30 x 40, 50 x 70, 61 x 91 and 70 x 100 cm, and US 18 x 24 and 24 x 36 in. Which posters fit and when to add a mat.

Sensitivity vs specificity: the share of cases a test catches and the share of healthy people it clears. Formulas, a worked 2x2 table and predictive values.

Should a research poster have a QR code? Usually yes, linked to the paper, data or your contact page. What to link, how big to print it and where to place it.

Standard deviation shows how spread out data are; standard error shows how precise a mean is. The formula, a worked example and what error bars show.

Systematic review vs meta analysis: a systematic review finds and appraises every eligible study, a meta analysis pools their results. How the two differ.

A poster is read from a metre away, so about 100 pixels per inch at full size is enough. Why 300 DPI is a photographic habit that does not apply.

What is a box plot: a chart of the median, quartiles, whiskers and outliers. How to read one, a worked five number summary, and when to use it over a bar chart.

What is a case definition: the standard criteria that decide who counts as a case in a study or outbreak. Confirmed, probable and suspected cases explained.

What is a chi-square test: a test of association between two categorical variables using observed and expected counts. A worked 2x2 example and assumptions.

What is a conflict of interest statement: a declaration of ties that could bias a study. What counts, how ICMJE frames it, and how to word one on a poster.

What is a confounding variable: a factor linked to both exposure and outcome that distorts their link. An example, how to control it, confounder vs mediator.

A CONSORT flow diagram tracks every participant from screening to analysis. What each box holds, why the arithmetic must reconcile, and how it fits a poster.

What is a DOI: a permanent identifier for a paper, dataset or other object that resolves to its current location. DOI vs URL vs ISBN, and DOIs on posters.

What is a forest plot: a chart of each study's effect and interval with a diamond for the pooled result. How to read one, and how to show one on a poster.

What is a funding acknowledgement: the line naming who paid for a study and the grant number. What UKRI and NSF require, and where it sits on a poster.

What is a graphical abstract: one image summarising a paper's main finding on a journal page. Size rules, what to leave out, and how it differs from a poster.

A hazard ratio compares how fast an event happens in two groups over time. What HR 0.6 or 1.5 means, how to read its interval, and how to report it on a poster.

A Kaplan-Meier curve plots the share of people still event free over time. How to read its steps, censoring ticks, median and the numbers at risk table.

What is a key finding statement: a poster's main result as one sentence, printed large at the top or centre as in billboard designs. How to write it well.

What is a p value: how incompatible data are with a null model, not the chance a finding is true. What 0.05 means and how to report one on a poster.

A pilot study runs a future trial, or part of it, on a small scale to test whether it can be done. Pilot against feasibility study, and progression criteria.

What is a poster handout: a small printed version or one page summary of a research poster for visitors to take away. Handout vs QR code vs email list.

What is a poster session: a conference slot where researchers stand beside their boards and discuss the work. What to prepare, board sizes and how to talk.

What is a preprint: a complete research paper shared publicly before peer review. Preprint vs published version vs postprint, and how to cite one on a poster.

A PRISMA flow diagram tracks records through a systematic review: identified, screened, assessed, included, with exclusions and reasons at each stage.

What is a rate ratio: the incidence rate in one group divided by the rate in another, using person time. How it differs from a risk ratio and an odds ratio.

What is a research poster? One large board that presents a single study, question to conclusion, for readers standing in front of it for a few minutes.

A1 poster size is 594 x 841 mm, 59.4 x 84.1 cm or 23.39 x 33.11 inches, half of A0. Exact pixels at 72, 150 and 300 DPI, and A1 against the 24 x 36 inch poster.

A2 poster size is 420 x 594 mm, 42 x 59.4 cm or 16.54 x 23.39 inches, a quarter of A0. Exact pixels at 72, 150 and 300 DPI, and what fits an A2 frame.

A3 poster size is 297 x 420 mm, 29.7 x 42 cm or 11.69 x 16.54 inches, twice A4. Exact pixels at 72, 150 and 300 DPI, and when A3 is the right poster size.

What is an abstract submission: the short structured summary a conference reviews to accept work as a poster or talk. What it contains and how acceptance works.

An e-poster is a conference poster shown on a screen instead of printed. The usual 16:9 landscape PDF rules, file limits, narration and design for screens.

What is an ethics approval statement: the line naming the committee that approved a study and its reference number. HREC, REC and IRB wording by country.

What is an odds ratio: the odds of an outcome in one group divided by the odds in another. A worked 2x2 example, how to read it, and why it is not a risk ratio.

What is an ORCID iD: a free, persistent 16 digit identifier for a researcher. How it compares with Scopus and ResearcherID, and where it goes on a poster.

What is an RCT: a study that randomly allocates people to an intervention or a control so groups differ only by chance. How it limits bias, and what it costs.

What is effect size: how big a difference or association is, not whether it passed a significance test. Cohen's d, risk and odds ratios, and how to report them.

What is IMRaD: the introduction, methods, results and discussion structure behind most research papers and posters, and how each part maps to a board.

What is intention to treat: analysing trial participants in the groups they were randomised to, whatever they received. Why it matters, and ITT vs per protocol.

What is number needed to treat (NNT): how many people need a treatment for one more to benefit. The formula from absolute risk reduction and a worked trial.

What is peer review: experts checking a study before it is published. Single, double and open review compared, and what a poster abstract review checks.

What is statistical power: the chance a study detects a true effect of a given size. Why 80 percent is the convention, and how power changes with sample size.

What is a protocol on a research poster: methods set out as short labelled entries instead of paragraphs. What each entry holds, and when prose works better.

Thematic analysis finds patterns of meaning across interviews or open text. Braun and Clarke's six phases, codes against themes, and themes on a poster.

Which citation style for a poster: use the style of your field or the conference, keep references few and numbered. APA, Vancouver and Harvard compared.

An amendment alters terms already in a contract. An addendum adds new ones. Which to use, how each is drafted and signed, and what happens when both apply.

What makes an agreement binding is not the heading on the page. The signals courts look at, what subject to contract means, and how to mark clauses that bind.

A business case argues for one decision and one spend. A business plan describes a whole business over years. The difference in audience, length and sections.

A deed binds without consideration and stays actionable for longer than an agreement, but it has to be executed formally. When each one is the right instrument.

Australian gift voucher expiry rules give at least three years from supply, and the date has to be shown. What the voucher must display, with UK and US notes.

A letter of intent states one side's intention. An MOU records what both sides have agreed so far. Which to send, what each binds, and what follows either one.

Meeting minutes are the formal record of decisions and motions. Meeting notes are a personal account. What separates minutes from notes and an action log.

An MOU is usually not binding, but a contract can be found inside one. The tests that decide it, and how to mark the clauses meant to have force.

A one way NDA protects one discloser. A mutual NDA protects both. Which to use, and why sending the wrong one costs more time than it saves.

Assignment transfers rights and keeps the obligations where they are. Novation replaces a party entirely and needs everyone's consent. Which one a deal needs.

Policy says what and why, procedure says how, and a guideline recommends. The difference between a policy and a procedure, with a leave example.

A privacy policy sets out how an organisation handles personal information. A privacy notice tells a person what is happening at the moment of collection.

A purchase order is written by the buyer to order goods. An invoice is written by the seller to be paid. The order they happen in is the whole point.

A quote offers a price, an invoice demands payment for work done, a proforma looks like an invoice but is not one. What each commits you to.

A reference letter confirms facts about someone. A recommendation letter argues for them. The difference between a reference and a recommendation letter.

A retainer buys availability every month. A fixed fee buys a defined deliverable. What each rewards, and the rollover clause that decides it.

A room rental agreement and a lease differ by whether the person is a tenant under tenancy law or a boarder. How to tell, by Australian state and in the UK.

A master agreement carries the legal terms once. A statement of work carries one piece of work: scope, deliverables, acceptance and price.

A tax deductible donation receipt names the DGR, its ABN, the amount, the date and that the gift was a donation. What is required and what is optional.

A 30 60 90 day plan sets what a new starter will learn, contribute and lead in each phase. What goes in each stage and how the plan is measured.

A bill of sale transfers ownership of goods and records the terms of the sale. What it must contain, how it differs from a receipt, and what vehicles also need.

A capability statement is the one or two page document a buyer reads before shortlisting. What it must carry, and how it differs from a company profile.

A code of conduct sets the behaviour expected of members or staff. How a code of conduct differs from a code of ethics and from an individual policy.

A credit note reduces what a customer owes. A refund returns money. What each does to the ledger, when GST has to be adjusted, and which one a customer wants.

A debit note says more is owed. Who issues one, how it differs from an invoice and a credit note, and what it does to the accounts on both sides.

A deliverable is a thing handed over. A milestone is a point in the plan. How to define one so it can be accepted, and why the difference decides invoices.

A founders agreement records what co founders agree at the start. How it differs from a shareholders agreement, and what vesting and IP clauses do.

A heads of agreement summarises the main commercial terms before the long form contract is drafted. What it holds, what binds, and how it differs by region.

A letter of demand is the last letter before court. What it must name, how it differs from a reminder and a final notice, and the mistakes that weaken it.

A master services agreement holds the legal terms once so each project can be short. The clauses it carries, what each one does, and how to negotiate them.

A payment schedule sets out when money moves and what has to happen first. Milestone, time based and retention schedules, with a worked six milestone example.

A PO number is the buyer's reference for an approved order. Why an invoice without one waits, where to find it, and how it differs from the other numbers.

A position description sets out the purpose, duties and criteria of a role. How it differs from a job ad and an employment contract, and what it is used for.

A proforma invoice is a priced document issued before supply. Why customs and deposits need one, what it must not claim to be, and what has to follow it.

A project charter authorises the project and names the manager. What a charter holds, how it differs from a project plan, brief and business case.

A promissory note is a signed promise to repay a sum. What it must contain, how it differs from a loan agreement and an IOU, and when it is enough on its own.

A quotation is a fixed price offer that binds once accepted. An estimate can move. What changes a quoted price, how long a quote lasts, and what to write.

A rate card publishes prices per unit of work so buyers can compare and plan. What belongs on one, how it differs from a price list, and when to publish rates.

An RCTI is a tax invoice the buyer issues instead of the seller. The four conditions the ATO sets, what the written agreement must cover, and when to stop.

A remittance advice tells a supplier which invoices a payment covers. What it must list, why suppliers chase it, and how it differs from a receipt.

A retainer agreement pays for reserved capacity or a bundle of hours each month. The three kinds, what each one buys, and the clauses that keep it working.

A risk register is the living list of risks with owners, ratings and responses. What each column holds, and how a risk register differs from a matrix.

A service agreement is the contract for ongoing services between two businesses. What it must cover, and how it differs from an SOW, a retainer and employment.

A sponsorship agreement trades money for benefits such as naming and signage. How sponsorship differs from a donation, and what the agreement must set out.

A standard form contract is offered on the same terms to everyone, with little room to negotiate. The tests a court applies, and the unfair terms rules.

A statement of account lists every invoice, payment and credit on one customer's account with the closing balance, so both sides can agree on the number.

A statement of work defines one piece of work: scope, deliverables, dates, acceptance and price. The sections it needs and the ones people leave out.

A SWMS is the safe work method statement required for high risk construction work. What a SWMS must contain, and how a SWMS differs from a JSA.

An Australian tax invoice must carry seven specific details, and more above one thousand dollars. What the ATO requires, and the thresholds that decide it.

A term sheet sets out the terms of an investment before the long form documents are drafted. What each standard heading means and which parts actually bind.

A timesheet records the hours somebody worked in a period and is approved by a manager. What a timesheet holds, who signs it, and how it differs from a roster.

A contract variation changes scope, price or time by written agreement. What a valid variation needs, and what a verbal change on site actually costs.

A written warning records a step in a performance or conduct process. What it must say, how many are needed, and what Fair Work expects of an employer.

An employee handbook collects a workplace's policies in one document. What it is for, whether it binds the employer, and how to keep it current.

An expense report is the itemised claim a person submits for money they spent. How an expense report, an expense claim and a reimbursement differ.

An influencer agreement sets the deliverables, usage rights and disclosure duties between a brand and a creator. What the contract must cover in AU and US.

Consideration is the exchange that makes a promise enforceable in contract law. What counts, what does not, and why a deed needs none of it at all.

Offer and acceptance are two of the four elements that form a contract. What counts as an offer, what an invitation to treat is, and when agreement is complete.

Scope creep is unpaid growth in the work. The five things that cause it, the document that answers each, and the wording that turns a favour into a variation.

Australian payslip requirements: what a payslip must include, the one working day rule, and the extra items for overtime, leave loading and super.

Can you charge late payment fees in Australia? Yes, if agreed before the work and reasonable. How to set interest or fees, what makes them unfair, and options.

Do I need an ABN on my invoice? Tax invoices must show it, and business clients may withhold 47 percent from payments without one. When and where to show it.

Do quotes need to include GST in Australia? When to show it, inclusive or exclusive pricing, consumer versus business quotes, and when you are not registered.

Fixed price vs time and materials: who carries the risk when a job runs over, what each quote shows, when a capped rate fits, and how to choose.

How long should a proposal be? Two to four pages for a small service job, five to ten for a project, more only for tenders. How to size it to the decision.

How long should a quote be valid? Most run 14 to 30 days. How to set the validity period from your cost risk, and what to do when a quote runs out.

How to follow up on a quote: what to say in each message, which channel to use, how to handle silence, and when to stop, with sample wording for each step.

How to price a proposal step by step: cost the work, add margin, choose fixed or itemised pricing, offer options, and set tax, deposit and validity correctly.

How to write an executive summary for a proposal: what it must say, the order of its parts, the right length, and the mistakes that make buyers skip it.

Invoice vs receipt: an invoice asks for payment, a receipt proves payment was made. When to issue each, what each must show in Australia, and how they link.

Is an accepted quote legally binding? Usually yes, once the offer, acceptance and consideration are present. When it holds, when it does not, and what to keep.

Markup vs margin: markup is profit on cost, margin is profit on price. Formulas, a conversion table, and why a 50 percent markup is a 33 percent margin.

Quote vs estimate vs proposal: what each document commits you to, when a buyer expects each one, and how a proposal wraps a fixed price in a case for the work.

Statement of work vs proposal: the proposal wins the job, the statement of work defines delivery. What each holds, when each is signed, and how they connect.

Stripe Checkout for invoices: how an invoice pay link opens a hosted Stripe page, what Connect and destination charges mean, fees, and what the customer sees.

Value based pricing vs hourly billing: how each sets the price, who carries the risk, when each fits a service business, and how to move clients across.

What EOM payment terms mean: credit counted from the end of the invoice month, with worked due dates for net 30, 30 days EOM and 7 days EOM.

What are optional line items? Extras the client can tick or untick before accepting a quote, with the total updating. When to use them and how many to offer.

What does 2/10 net 30 mean: a 2 percent discount if paid within 10 days, the full amount due in 30, a worked example, and the annual rate the discount implies.

What does due on receipt mean on an invoice: payment is owed as soon as the invoice arrives, with no credit period. How it compares with net 7 and net 30.

What does net 30 mean? The full invoice amount is due 30 days after the invoice date. How net terms work, variants like 2/10 net 30, and when to use them.

What is a bill of quantities: an itemised list of measured work and materials that contractors price, what a BOQ holds, and how it differs from a quote.

What is a BSB number: the six digit Australian bank and branch code, how to print it on an invoice with the account number, and how it compares with SWIFT.

What is a call out fee: the fixed charge a tradesperson makes to attend a job, what it covers, how it differs from a service fee, and how to quote it.

What is a commercial invoice: the document customs uses to value and clear exported goods, what it must show, and how it differs from proforma and tax invoices.

What is a contingency in construction: money set aside for risks that cannot be priced, how it differs from allowances, P50 and P90 estimates, how to show it.

What is a day rate: the price for one working day, how to build it from target income, costs and billable days, and when to quote by the day.

What is a deposit invoice? An invoice for an upfront part payment before work starts: how to set the amount, what it shows and how the balance follows.

What is a final invoice: the last invoice on a job, billing the balance after deposits and progress payments, with a worked $12,000 example and what to show.

What is a partial payment: a payment below the amount due on an invoice, how the balance is tracked, how it differs from a deposit or instalment.

What is a payment link? A web address that opens a secure checkout so a customer can pay by card without an account. How it works, fees and safety checks.

What is a prime cost item: a building quote allowance for an item not yet chosen, how selections over or under budget are adjusted, with a worked example.

What is a progress invoice? An invoice for one stage of a larger job, billed as work is completed. How progress billing works, what it shows and when to use it.

What is a provisional sum: an Australian building quote allowance for work not yet priceable, how it is adjusted, and how it differs from a prime cost item.

What is a schedule of rates: agreed unit prices applied to work as it is ordered, used in maintenance contracts. A worked schedule and a month of charges.

What is a tender: a formal competitive bid to supply goods or services under set rules, open and selective tenders, the steps from notice to award, how to bid.

What is a VAT invoice in the UK: what HMRC requires on a full VAT invoice, when a simplified invoice of 250 pounds or less will do, and the 30 day issue rule.

What is a void invoice: an issued invoice cancelled but kept on record with its number, when to void rather than delete or credit, and what records must show.

What is accounts receivable: the money customers owe for work already delivered, how it sits on a balance sheet, how ageing works, and a worked example.

What is an acceptance certificate? A record of who accepted a proposal or quote, when, what they saw and what they agreed. What it holds and why it matters.

What is an engagement letter: the letter confirming scope, fees and terms before professional work starts, what goes in it, and how it differs from a proposal.

What is an expression of interest: the first procurement stage that shortlists suppliers before a tender, what an EOI response needs, and EOI vs RFQ.

What is an invoice number: the unique reference on every invoice, the numbering formats that work, and what the ATO and HMRC expect it to do for your records.

What is an itemised invoice: each item listed with quantity, unit price, GST and amount, what Australian tax invoices must show, and a worked example.

What is an overdue invoice: an unpaid invoice past its due date, when it becomes overdue, a reminder ladder by days late, and the UK and Australian rules.

What is an RFQ: a request for quotation asking suppliers to price a defined scope, how it differs from an RFI, RFP and tender, and how to answer one well.

What is cost plus pricing: price equals cost plus a markup, a worked example, how cost plus contracts work in building, and when fixed pricing fits better.

What is days sales outstanding (DSO): the average days customers take to pay, the formula, a worked quarter for a small trade business and how to read it.

What is e-invoicing: invoices sent as structured data between accounting systems over Peppol, not PDFs by email. How it works in Australia, NZ and the EU.

What is invoice factoring: selling unpaid invoices to a financier for cash now, how the advance and fees work, recourse, and factoring vs discounting.

What is PayID: an email, mobile or ABN linked to a bank account so Australian customers pay fast through online banking. PayID vs BSB and card.

What is retention money: the share of progress payments held back as security for defects, when it is released, and Queensland retention trust rules.

What is tiered pricing: two to four packages at rising prices so clients choose a level, with a worked three tier website package and volume tiers explained.

Anonymous vs confidential survey: one never collects who answered, the other collects it and limits who can see it. What each records and how to say which.

Confidence level vs confidence interval: the level is how often the method captures the true value, the interval is the range. A worked survey example.

Cross sectional vs longitudinal survey: one snapshot of a population, or repeated measures over time. Cost, what each can show, and where a pulse survey fits.

Do progress bars help form completion? The evidence is mixed: steady bars do little, bars that look slow early raise drop off. What the studies found.

Show fewer than six options as radio buttons and use a dropdown beyond that. How option count, mobile and default values decide between dropdown and radio.

Fillable PDF vs flat PDF: one has form fields a reader can type into, the other has every mark fixed in the page. Editing, printing, signing and archiving.

Form vs survey: a form collects details to act on one response at a time, a survey collects opinions to analyse together. How that changes every design choice.

Form field vs component: a field collects an answer, a block only displays, and component covers both. All 41 types in this builder, grouped by what they do.

Inline validation vs on submit validation: errors shown as a field is left, or all together after pressing submit. What the studies found and when each wins.

NPS asks how likely you are to recommend, on 0 to 10, and reports a net score. CSAT asks satisfaction with one interaction. They answer different questions.

Open ended questions collect words, closed ended questions collect categories. The trade in analysis effort, response rate and bias, and where each belongs.

Primacy and recency effects mean the first or last options get picked more often. Why the effect flips between visual and spoken surveys, and what to do.

Registration form vs application form: registering claims an open place, applying asks to be chosen, and enrolment confirms a place already offered.

Required vs optional fields: what a required mark costs, whether to mark required or optional fields, and how to decide which questions a form can insist on.

Response rate vs completion rate: one counts responses against everyone invited, the other finishers against everyone who started. Formulas and fixes.

Not applicable, do not know and prefer not to say mean three different things. When each belongs on a question and how each should be coded in the results.

A neutral midpoint lets people sit in the middle; a forced choice makes them take a side. What the research says about 4 point and 5 point scales.

Single select takes one answer, multi select takes several. When to use radio against checkbox, how results are counted, and the select all undercount.

Skip logic vs branching: skip logic jumps a respondent past questions, branching sends groups down different paths. How display logic and piping differ.

The NPS question asks how likely you are to recommend, on a zero to ten scale. The standard wording, the follow up, and how the score is counted.

What does embedding a form mean? Showing a hosted form inside your own web page instead of sending a link. Embed, link and popup compared, with the catches.

What is 360 degree feedback? Ratings from a manager, peers, direct reports and the person themselves, who sees what, and why it suits development best.

What is a consent checkbox? A box a person ticks to agree to one specific use, such as marketing email. Why it starts unticked, with AU, EU and US rules.

A conversational form shows one question at a time instead of a page of fields. When it lifts completion, when it slows people down, and what it costs.

Demographic questions ask about age, gender, location and income. Which ones to ask, how to word them inclusively, and why they belong at the end.

A dichotomous question offers exactly two answers, usually yes or no. When two options are enough, what bias they avoid, and what they hide.

What is a domain restricted form? One that only opens for a listed domain: the respondent's email domain, or the website embedding it. Both kinds compared.

A double barrelled question asks two things at once, so a single answer cannot be interpreted. Five examples with the fixed version of each.

A fillable PDF has real form fields inside the file, so any reader can type into it. What converts, what cannot, and why a returned PDF is not a response.

What is a forced choice question: one that makes respondents pick an answer with no neutral or skip option, the three ways the term is used, and when it helps.

What is a form submission? One completed, sent copy of a form and the record it creates. Submission vs response vs entry vs partial, and what gets stored.

What is a form theme? The colours, type and surfaces a form is drawn with, kept apart from its questions. Theme vs template, and the contrast rules to check.

What is a good survey response rate? It depends on channel and audience. Dated benchmarks from Pew, the US Census Bureau and SurveyMonkey, read with care.

What is a hidden field in a form? A value the respondent never sees, usually filled from the link, such as a campaign or referrer. Uses, risks and support.

A JSON payload is the data sent in the body of a web request or response, written as JSON. A real form submission payload explained key by key.

What is a lead capture form? A form that collects a prospect's details plus a few qualifying answers so sales can follow up well. Lead form vs contact form.

A leading question steers the respondent towards an answer through its wording. How leading and loaded questions differ, with neutral rewrites of each.

A Likert scale measures agreement across ordered points, usually five or seven. Whether to include a midpoint, how to label it, and how to analyse it.

A matrix question asks several statements against one scale in a grid. When it saves people time, when it hurts your data, and how it exports.

What is a multi step form? One form split into short pages with Back and Next. When steps beat a single page, and how to draw the breaks.

What is a partial response in a survey? One started but not finished. How partials are classified, when to analyse them, and why some tools never keep them.

What is a pulse survey? A short survey repeated on a schedule with the same questions. How it differs from an engagement survey in length, pace and purpose.

A ranking question asks people to put items in order. How ranking differs from rating, what each analysis can tell you, and how to ask it without a drag field.

A rating scale question asks for a judgement of one thing on an ordered scale. How 3, 5, 7 and 10 point scales differ, and how to label them properly.

What is a regex pattern in a form field? A rule the whole answer must match. Five Australian patterns, the traps in each, and what to use when there is none.

What is a representative sample? One that mirrors the population on the traits that shape the answers. Random, stratified, convenience and quota compared.

A sampling frame is the list a survey sample is drawn from, such as a staff directory or address file. Frame against population, and coverage error.

A screening question decides who continues in a survey. Where screeners go, how disqualification is handled, and how a jump rule ends the form early.

What is a secret link form? One anybody with the address can open and nobody else can find. How unlisted forms leak, and when a key or sign in is needed.

A semantic differential scale puts two opposite adjectives at each end and asks for a point between. How it differs from a Likert and a rating scale.

A slider question asks for a point on a continuous line rather than a fixed step. How sliders compare with stepped scales on precision, mobile and analysis.

What is a thank you page? The screen after a form is sent. What it must confirm, when a redirect or an email confirmation does the job better.

What is a waiver form? A signed record that a participant accepts the risks and gives up some claims in advance. Waiver vs release, with an Australian note.

What is a webhook? An automatic request one system sends to your URL when an event happens. A form submission example, and how to receive one safely.

What is a welcome screen on a form? The page before the first question: purpose, time, what to have ready. What to write, and the 10 layouts compared.

Acquiescence bias is the tendency to agree with a statement regardless of its content. Why agree and disagree scales invite it, and what to use instead.

What is an attention check question: an item that tests whether survey respondents are reading, the main types, how to use them fairly, and their limits.

What is an intake form? The form a new client completes before a service starts, so the provider arrives prepared. Intake vs application vs registration.

What is an order form? The form a buyer fills in to say what they want, how many and where it goes. Order form vs invoice, with Australian tax invoice rules.

Conditional logic in a form changes what a person sees next based on an earlier answer. How it works, how to test it, and what ships in this builder.

Convenience sampling surveys whoever is easiest to reach, such as passers by or a shared link. Why it is quick, where its bias comes from, when it is enough.

Customer effort score asks how easy it was to get something done. The standard CES question, the scale, and how it compares with NPS and CSAT on timing.

What is double opt in: confirming a sign up with a second step, usually an email link, how it differs from single opt in, and what the law actually requires.

What is form validation? The checks an answer must pass before a form accepts it: in the browser for speed, on the server for trust, and which rules matter.

What is form versioning? Keeping each published state of a form as its own version, so answers stay tied to the questions they replied to. Draft vs live.

What is margin of error? The range a survey result is likely to sit within, how it is calculated at 95 percent confidence, and a table by sample size.

What is non response bias? The error when people who skip a survey differ from those who answer. Signs to look for, and remedies from reminders to weighting.

What is piping in a survey? Piping carries an earlier answer or a known value into later question text. Where it helps, where it breaks, and the workarounds.

What is quota sampling: a non random method filling fixed quotas for groups like age and region, a worked example, and how it differs from stratified samples.

What is recall bias: errors from how people remember past events, why it skews surveys and studies, a worked example, and question design that reduces it.

Social desirability bias is answering to look good rather than accurately. Which topics attract it, and the wording and anonymity choices that reduce it.

Stratified sampling splits a population into groups, called strata, and samples each one. A worked staff survey example, proportionate and disproportionate.

Survey fatigue is the drop in response quality and completion as a survey gets longer or arrives too often. How length affects drop off and what to cut.

What is survey weighting? Adjusting responses so the sample matches the population. A raw vs weighted worked example, the main methods, and its limits.

What sample size do I need for a survey? Work it out from population, confidence level and margin of error, with a table for 90, 95 and 99 percent.

1080p vs 1440p: 1920 x 1080 against 2560 x 1440 pixels, 78 percent more pixels, density at 24 and 27 inches, and YouTube bitrates for each upload size.

1080p vs 4K video: pixel counts, upload bitrates and file sizes compared, when 4K detail is visible, and when a 1080p export is the smarter choice.

1080x1350 video is the 4:5 portrait feed format. Sizes from 360 x 450 to 1440 x 1800, LinkedIn and Meta specs, and how to crop 9:16 or 16:9 video to 4:5.

8K resolution is 7680 x 4320 pixels; 2K is 2048 x 1080 in cinema and 2560 x 1440 on YouTube. 4K UHD and DCI compared, pixel counts and when 8K helps.

9:16 vs 4:5 vs 1:1 video: which ratio each feed and full screen placement wants, what cropping does to text, and how to plan one video for several feeds.

Average view duration vs watch time: one is minutes per view, the other is minutes summed across every view. A worked example and what each one shows.

Burned in captions vs closed captions: text in the picture versus a track viewers can switch off. How each works, where each fits, and the mistakes to avoid.

CPM vs CPV vs CPC for video ads: what each price counts, how YouTube, Meta and LinkedIn define a paid view, and which model fits which campaign.

Do you need to disclose an AI video? Yes when it shows a realistic person or event that is not real. What YouTube, TikTok, Meta, the FTC and the EU AI Act ask.

Instagram Reel size: 1080 x 1920 at 9:16, a 1080 x 1440 grid crop for the cover, and Meta's 14% top, 35% bottom and 6% side margins for Reels ads.

J cut vs L cut: in a J cut the next shot's sound starts before its picture, in an L cut the last shot's sound runs on. When to use each split edit.

Motion graphics vs animation: moving design that explains versus characters that perform. How they differ in tools, cost and use, and which a video needs.

MP4 vs MOV vs WebM: how the three video containers differ in origin, codecs and playback support, and which one to use for editing, uploading and the web.

Snapchat story size: 9:16, made at 1080 x 1920. Snap's ad formats page lists 720 x 1280 resolution and 3 to 180 second videos in MP4, MOV, JPG or PNG.

Square video size is 1080 x 1080 pixels, 1:1, with 720 x 720 for lighter files. LinkedIn square limits, how players show square video and how to crop to 1:1.

Subtitles vs captions vs SDH: translation, transcription and sound description compared, with the UK and US naming differences and the mistakes to avoid.

TikTok video size: 1080 x 1920 at 9:16 is the standard. TikTok's ad specs set 540 x 960 as the vertical minimum, up to 500 MB and 10 minutes for In-Feed ads.

Voiceover vs narration: how the two words overlap, where film, advertising, e-learning and accessibility use them differently, and what to ask for in a brief.

What counts as a video view on YouTube, TikTok, LinkedIn and Meta, why each platform draws the line differently, and how to compare view counts fairly.

What is a bumper ad: a non skippable YouTube video ad of 6 seconds or less, bought on impressions. How it compares with skippable and in-feed formats.

A cold open drops the viewer into a scene before any title, logo or intro. Where it comes from, how it differs from a hook, and using one in a promo.

What is a CTA in a video? The instruction that tells viewers what to do next. How to word it, where to place it, and which call to action suits each video type.

What is a cutaway shot: a shot that leaves the main action to show something related, then returns. How it differs from B-roll and inserts, and when to use one.

A faceless video carries its message with footage, on screen text and a voiceover instead of a person on camera. How to structure one, and when a face wins.

What is a jump cut? An edit that removes time from one shot so the subject leaps forward. How it differs from a match cut and hard cut, and when to hide it.

What is a looping video: a clip whose end runs straight back into its start. Loop vs GIF vs Boomerang, how looping is set, and how to cut a seamless loop.

What is a lower third? The name and title strip near the bottom of a video, how to place and time it, and how it differs from captions and title cards.

What is a match cut: a cut that links two shots through a matching shape, movement or sound, the three kinds of match, and how to plan one in a short video.

A montage is a sequence of short shots edited to compress time or build an idea. Training montages, Soviet montage, and montages in promo videos.

What is a pre roll ad: a video ad that plays before the video a viewer chose. How it differs from mid-roll and post-roll, skip rules and how views are billed.

What is a product demo video? A recording of a product doing a real job for a buyer, and how it differs from an explainer and a tutorial in viewer and shape.

What is a push in? A camera move towards the subject that tightens the frame as the shot plays, and how it differs from a zoom and the Ken Burns effect.

What is a rough cut: the first complete edit of a video in order, how it differs from an assembly, a fine cut and picture lock, and what feedback to give.

The vertical video safe zone is the part of a 9:16 frame no app interface covers. Meta's 14, 35 and 6 percent figures, TikTok's layout, and where captions go.

What is a scene in video editing? How a scene differs from a shot and a sequence, why scenes are the unit that sets structure and pace, and how to plan them.

What is a screencast: a recording of a computer screen, usually narrated, that shows how software works. Screencast vs screen recording vs screenshot tutorials.

What is a shot list? The numbered table of every shot a video needs, the fields it carries, and how it differs from a storyboard and a scene list.

A sizzle reel is a short, fast promo video that sells a project, person or product with its best moments. Sizzle against demo reel and trailer, and length.

What is a slideshow video: still photos turned into a video with motion, captions and sound. Slideshow vs montage vs promo, and how to pick and pace the photos.

What is a storyboard? The panel by panel plan of what a video will show, how it differs from a script and a scene list, and when one is worth drawing.

What is a talking head video? One person speaking to camera: how it is shot and cut, what engagement research found, and when a face beats a faceless edit.

What is a teaser video: a short clip that builds interest before a launch without showing everything. How teasers differ from trailers and launch videos.

What is a testimonial video: a real customer vouching for a business on camera or in a quote. How it differs from a case study, and the disclosure rules.

What is a title card? The full frame of text that opens, divides or closes a video, how long to hold one, and how intro and end cards differ.

What is a tutorial video: a video that teaches one task step by step so the viewer can repeat it. Tutorial vs walkthrough vs instructional video, and its shape.

What is a UGC ad: a paid advert made to look like an ordinary creator post. What defines the format, how to structure one, and the disclosure rules that apply.

What is a video codec? How H.264, H.265, VP9 and AV1 compress video, how a codec differs from a container such as MP4, and which codec to choose.

What is a video thumbnail? The still image that represents a video before it plays. The sizes YouTube accepts, the rules it enforces, and how to choose a frame.

What is a video transition? How a cut, dissolve, fade and wipe each hand one shot to the next, what each signals, and when a plain cut is the better choice.

What is a video watermark? A small persistent logo or wordmark over the picture. Where it goes, how transparent it should be, and when it limits reach.

What is a VSL: a video sales letter that walks a viewer from problem to offer to one call to action. Structure, length, and the claims to be careful with.

What is a YouTube end screen? The clickable elements in the last 5 to 20 seconds of a video, the five element types, and how to edit a video with room for them.

What is voice cloning? How AI copies one person's voice, why consent and impersonation law matter, and why the video builder here uses stock voices instead.

What is an AI avatar video? How a generated presenter speaks a script, how it compares with faceless and filmed video, and where endorsement rules apply.

What is an audience retention graph? How the curve is built, the shapes it takes, what each says about a scene, and the mistakes people make reading it.

What is an establishing shot: the opening wide that tells viewers where and when a scene happens, how it differs from a master shot, and its use in short video.

What is an explainer video: a short video that shows a problem, the fix and how it works. The main styles, typical lengths, and the order that teaches.

What is an SRT file? The plain text SubRip caption format explained cue by cue, how it differs from WebVTT, and the mistakes that break captions on upload.

What is audio ducking? How background music drops under a voice, how depth and ramp are set, and the 20 dB accessibility guideline for background sound.

What is B-roll? The supporting footage cut over the main recording, how it differs from A-roll, and the shots that make good cover for interviews and ads.

What is frame rate? What 24, 30 and 60 fps each look like, why the rate should stay constant from shoot to export, and which rate suits which video.

Hold rate is the share of hooked viewers who keep watching a video ad, usually ThruPlays divided by 3-second plays. How to calculate and read it.

Hook rate, also called thumb-stop ratio, is 3-second video plays divided by impressions. The formula, each platform's inputs, and the aliases teams use.

What is kinetic typography? Animated text that moves in time with a voice or music, how to pace it for reading, and the accessibility limits to respect.

What is LUFS? The loudness unit broadcasters and podcast apps use, how it is measured, and the targets set by EBU R 128, ATSC A/85 and Apple Podcasts.

What is pacing in video editing? The rhythm set by shot length and how fast information arrives, and the seconds per scene that suit promos and tutorials.

What is stock footage? How royalty free, rights managed, editorial and Creative Commons licences differ, and when stock clips help or hurt a video.

What is text to speech? How TTS turns writing into spoken audio, how concatenative, parametric, neural and generative voices differ, and how to write for them.

What is the Ken Burns effect? A slow pan and zoom across a still photo. The settings that look graceful, the ones that make viewers queasy, and where it fits.

What is the title safe area? The inner part of a frame where text is never cropped, from the old 80 and 90 percent rules to EBU margins and platform overlays.

ThruPlay counts a video ad watched for 15 seconds, or to the end if shorter. What cost per ThruPlay means and when to bid on it over 3 second plays.

What is bitrate in video? How Mbps affects quality and file size, constant versus variable bitrate, recommended upload rates, and common export mistakes.

Video completion rate is the share of video plays that reach the end. How Meta, TikTok and YouTube count it, and why video length moves the number.

YouTube banner size: upload at least 2048 x 1152 at 16:9, keep text in the 1235 x 338 safe area, 6 MB or smaller, 2560 x 1440 recommended for TV.

YouTube Shorts size is 1080 x 1920 at 9:16. Uploads up to 1080p, Shorts run up to 3 minutes, and the right and bottom edges carry buttons and captions.

YouTube thumbnail size: 16:9, up to 3840 x 2160 recommended, 640 pixels wide minimum, JPG or PNG, 2 MB on mobile and 50 MB on desktop. Shorts thumbnails too.

An access code is a shared secret you send the signer yourself. A one time code is emailed at signing time and expires. When each is the right check.

Electronic signatures are legal across Canada under PIPEDA and provincial acts. What a secure electronic signature is, and how Quebec and Ontario differ.

Electronic signatures are legal in New Zealand under Part 4 of the Contract and Commercial Law Act 2017. The reliability and consent tests, and the exclusions.

Electronic signatures are legal in the UK for most documents. What the Electronic Communications Act and the Law Commission say, and where deeds differ.

A signed PDF carries an approval signature. A certified PDF carries the author's certifying signature and a rule about later changes. How readers show each.

Most contracts need no witness. Deeds, some land documents and statutory declarations do, and the rules on remote witnessing differ by jurisdiction.

A drawn electronic signature and a typed one are both valid. What each produces, what is recorded about the choice, and why the evidence comes from elsewhere.

Effective date vs execution date: when a contract's obligations start against when the last party signs it, with a worked example and how to word each date.

An electronic signature is any mark made with intent to sign. A digital signature is cryptography. One is a legal category, the other is a technique.

How to add a signature to a Google Form: there is no signature question, so use a typed name, a file upload, an add-on or a form builder with a signature field.

How to sign as power of attorney: check the power covers the document, sign your own name, add the donor and capacity wording, and keep the instrument to hand.

How to sign on behalf of a company: confirm your authority, name the company, sign in your capacity with your title, and use two officers for formal execution.

A signature signs the agreement. Initials mark that a specific page or clause was seen. When to ask for each, and when initials are theatre.

In most countries yes: a signature cannot be denied effect merely because it is electronic. What the statutes require, and the documents still excluded.

Notarisation verifies identity before an authorised officer. An electronic signature records intent. When a document needs one, the other, or both.

Sequential signing invites one person at a time; parallel invites everyone at once. How each affects speed, control and what each signer can see.

A recipient signature is the mark of a person a document was sent to. Every signer is a recipient, but not every recipient signs. The roles, and who signs what.

The Electronic Transactions Act 1999 and its state twins set three conditions for a valid Australian electronic signature. What they are and what is excluded.

Voiding is the sender withdrawing a request. Expiry is the clock running out. What each one emails, what recipients see, and what the record keeps.

To countersign is to sign after another party has signed, completing the document. How it differs from signing and initialling, and who should go last.

Fully executed means every party required to sign a contract has signed it. How it differs from signed and effective, and what proves it in e-signing.

Initialling each page shows you saw every page and none was swapped later. What the mark means, when lawyers still ask for it, and when a sealed PDF covers it.

What does pp mean in a signature: per procurationem, signing a letter on behalf of someone else, where the pp goes, and when a document needs more than a pp.

What does signed sealed and delivered mean: the old formula for executing a deed, what each word required then, and what signing a deed involves today.

Signing in counterparts means each party signs a separate copy and the copies together form one agreement. Why electronic signing makes it mostly unnecessary.

Tamper evident means a change can be detected, not prevented. What certification and hashing actually stop, and why tamper proof is the wrong word.

An electronic signature produces a bundle of evidence, not one file. What each item proves, where it is stored, and where the record is thinner than expected.

Declining stops the request, emails the sender with any reason given, and leaves nothing further stamped. How it differs from ignoring a request or voiding one.

A certificate authority issues and revokes the certificates that sign PDFs and secure websites. Root and intermediate CAs, trust lists, and unknown validity.

An e-signature certificate of completion is the PDF record of a finished signing: each signer's identity check, IP and consent, plus the full event log.

A common seal is a company stamp with its name and ACN. Australian companies may still use one, but section 127 lets them sign without it.

A digital signature signs a hash of the file with a private key. What it proves, what it does not, and how one is embedded in a signed PDF.

A document hash is a fixed string computed from a file's bytes. Why a signing certificate prints two of them, and what each one actually covers.

A hash chain includes each entry's hash in the next one, so a rewritten row breaks everything after it. How signing logs use it, and what it does not prove.

What is a jurat: the certificate on an affidavit showing it was sworn or affirmed before an authorised official, and how it differs from an acknowledgment.

A qualified electronic signature is the top eIDAS level: a qualified certificate, a qualified device, and the legal effect of a handwritten signature in the EU.

What is a self signed certificate: one signed by its own key rather than a certificate authority, why PDF readers flag it, and when it is still useful.

What is a signatory: the person who signs a document and is bound by it, how an authorised signatory differs, and how companies, witnesses and recipients fit.

A signature block is the group of lines under a signature: name, title, company and date. What each line is for and why the date should not be typed.

A signature certificate binds a public key to a named holder. What an X.509 certificate contains, who issues one, and why a reader may not trust it.

What is a signature line: the ruled line a signer signs on, the labels printed under it, how it differs from a signature block, and how to lay one out.

What is a signature page: the final page carrying the execution blocks, why signing it alone is risky, the Mercury case, and how electronic signing changes it.

A signing link is the personal address that opens one recipient's copy of a document. What it carries, why forwarding it matters, and when it stops working.

A signing session is the short pass a signer gets after verifying, tied to one recipient and envelope. Why it lasts minutes, and what to do when it ends.

A simple electronic signature is the base eIDAS level, with no identity or certificate requirement. Why most business signing is SES and what strengthens it.

A timestamp authority is an independent service that signs the time a document existed. Why a signer's own clock proves nothing, and what a token adds.

A wet signature is ink on paper. What the term means, what ink actually proves, and the Australian documents that still expect a wet signature.

An advanced electronic signature meets four eIDAS tests: uniquely linked, identifies the signatory, sole control, and any later change is detectable.

What is an attestation clause: the words a witness signs to confirm they saw a document signed, when wills and deeds need one, and the testimonium.

What is an audit trail in e-signature? The time ordered record of when a document was sent, who opened it, how signers were verified and who signed.

An electronic seal is data an organisation attaches to a file to prove its origin and integrity under eIDAS. Seal against signature, and the three levels.

An electronic signature is any electronic mark made to show intent to sign. The four common forms, what each one proves, and how signing software records them.

An envelope is one document plus its recipients, fields and status. What it holds, the statuses it moves through, and why it cannot be edited after sending.

An execution block is the signing section at the end of a contract or deed: wording that shows who signs and on what authority. Company and deed forms compared.

An RFC 3161 timestamp is a signed statement from an independent authority that a document existed at a moment. How it attaches to a PDF signature.

Click to sign means agreeing by pressing a button rather than applying a mark. When clickwrap binds, what has to be recorded, and when a signed file is needed.

Consent to do business electronically is the agreement to receive records and sign on screen. What the US disclosure must say, and what Australian law expects.

DocMDP is the PDF permission that says what may be changed after a certifying signature. The three levels, what each allows, and why level one is used.

eIDAS is the EU regulation covering electronic signatures, seals, timestamps and identity. What it sets out, what the 2024 amendment added, and who it binds.

Identity verification is how a signing process establishes who is signing. The six common methods, what each proves, and the friction each one adds.

In-person signing hands a signer the sender's device instead of emailing a link. How the session starts, what the audit trail records, and when to use it.

KBA asks questions drawn from public and credit records to verify a signer. Why it is mostly a United States practice and why its reputation has fallen.

LTV embeds the certificates and revocation data a signature needs, so it can still be checked after the certificate expires. What gets stored and why.

Non-repudiation means a signer cannot credibly deny signing. Which records support that claim, which denials they answer, and where the argument gets through.

PAdES is the ETSI standard for digital signatures embedded in a PDF. What it adds over a plain signature, its levels, and how to spot one in a reader.

Signing order sends the document to one person at a time, in sequence. When sequential signing matters and when it just slows everything down.

The ESIGN Act is the US federal law giving electronic signatures legal effect. Its four conditions, the consumer consent rules, and the documents it excludes.

Two factor signing pairs something the signer has with something they know or a second channel. Which pairs are genuinely independent, and which only look it.

UETA is the uniform state act on electronic signatures and records, adopted almost everywhere in the US. What it adds beyond the federal ESIGN Act.

Validity unknown means the reader does not recognise the certificate issuer, not that the document changed. How to read the three states and what to do next.

AAB vs APK: the Android App Bundle Google Play requires for new apps against the APK a phone installs, compared on size, signing and sideloading.

App icon sizes for iPhone and Android: the 1024 x 1024 App Store icon, the 512 x 512 Google Play icon, adaptive icon layers and safe zones.

App Store guideline 4.2 explained: why Apple rejects apps that only repackage a website, what 4.2.6 says about builder made apps, and how to give an app a job.

App Store screenshot sizes: iPhone 1179 x 2556 to 1320 x 2868, iPad 2064 x 2752, and Google Play 320 to 3840 px with a 1024 x 500 feature graphic.

Custom domain vs subdomain: a domain you own like yourbusiness.com versus a free platform address. Cost, trust, portability and search compared in a table.

Deep link vs universal link: custom scheme links against verified https links that open an app on iPhone and Android, with what happens without the app.

Deposit vs hold: a charged deposit moves money now, a card hold only reserves it for a few days. When each is taken, refunded, expires and gets disputed.

Development build vs production build in Expo: what each EAS build profile is for, who can install it, how it is signed and which one goes to the stores.

Google Play developer account verification: the one time 25 USD fee, identity checks, and the 12 testers for 14 days rule for new personal accounts.

Headless CMS vs database: a content API for editors compared with tables a site reads and writes, such as orders, bookings and members. Which one you need.

How long does DNS propagation take? Usually minutes to a few hours, up to 48 hours in rare cases. Why changes are slow, how to check them and what to fix.

How many pages does a small business website need? Usually five to eight: home, one per main service, about, contact, privacy and terms. How to decide.

Apple Developer Program cost: 99 USD a year for individuals and organisations, with waivers for some nonprofits. What it includes and what it does not.

Landing page vs website: one page with one goal versus a set of pages for many visitors. A table of differences and how to decide what to build first.

One page vs multi page website: how each affects search, navigation, upkeep and conversions, with a table to decide which structure fits your business.

Pre-order vs backorder: one sells before a launch, the other while stock is out. When buyers pay, the ship date, cancelling and consumer law compared.

PWA vs native app for a small business: cost, app store presence, device features, updates and review compared in a table, and how to choose between them.

Static site vs server side rendering: pages built once at build time against pages rendered on every request, compared on speed, hosting, fresh data and cost.

Stripe Checkout vs Payment Links: a checkout page built per order by your site versus a reusable link made in the dashboard. Carts, stock and shipping compared.

Upselling vs cross-selling: an upsell offers a better version of the chosen item, a cross-sell adds a related one. Worked examples, rules and limits.

Website accessibility basics for small businesses: contrast, alt text, headings, link text, forms and keyboard use, mapped to WCAG, with a five step checklist.

What are Core Web Vitals? Three measures of loading, responsiveness and visual stability, LCP, INP and CLS, with the thresholds Google uses and what moves them.

What are product variants? The buyable versions of a product made from its options, like size and colour, each with its own price, SKU and stock, with examples.

What are web push notifications? Alerts a website can send to a browser or installed web app after permission, even when the site is closed. How they work.

What does above the fold mean on a website? The part of a page visible before scrolling. What belongs there, how it differs on phones, and why it still matters.

What is a 301 redirect? A permanent redirect that sends visitors and search engines to a new address, and how it differs from 302, 307 and 308.

What is a back in stock alert? A saved request to be told when a sold out item returns. How it works with wishlists, and email, in app and SMS alerts compared.

What is a billing portal? A hosted page where a subscriber updates their card, changes plan, downloads invoices or cancels, without emailing the business.

What is a bundle ID? The unique reverse domain identifier for an app, like com.yourbusiness.app, used by Apple and Google. Format, rules and why it stays.

What is a call to action on a website? The button or link that asks visitors to take the next step, such as book, call or buy. Placement, wording and examples.

What is a CDN? A network of servers around the world that keeps copies of your site files close to visitors, so pages load faster and survive traffic spikes.

What is a chargeback: a card payment reversed by the cardholder's bank after a dispute, the process, time limits, fee, evidence to send, and prevention.

What is a client portal? A private signed in area where each client sees project status, files, approvals and invoices. Compared with email and shared drives.

What is a CNAME record? A DNS entry that points one name, like www.yourdomain.com, at another name. What it does, why builders ask for one, and the apex catch.

What is a collection in ecommerce? A group of products shown together, like New arrivals or Mugs, with its own page, and how they differ from categories.

What is a compare at price? The original price shown crossed out next to a lower sale price. How it displays and the law on was and now pricing.

What is a connection pooler? A proxy that lets many clients share a few Postgres connections. Session and transaction pooling compared, with examples.

What is a consent banner? The notice that asks before non essential cookies and embedded videos or maps load. What the UK, EU and Australia expect of it.

What is a data export request? A person asking for a copy of the data a business holds on them. Timings under GDPR, UK GDPR and the Australian Privacy Act.

What is a database migration? A numbered SQL file that changes a database schema and lives in the code repository, so every copy can be rebuilt the same way.

What is a digital download product? A file a buyer pays for and downloads, such as an ebook, preset pack or template. Examples, delivery, limits and tax basics.

What is a discount code: a code that applies a price reduction at checkout, the main types, the limits shops set and the pricing rules a discount must follow.

What is a double booking? Two bookings for one slot or person. Why it happens online, and how a database refuses overlaps with a constraint or a lock.

What is a favicon? The small icon beside your site name in browser tabs, bookmarks and search results. Where it appears, what sizes to make and common mistakes.

What is a free shipping threshold: the order value above which delivery is free, how to set it from average order value and shipping cost, with an example.

What is a hero section? The large opening block of a web page with the main heading, a supporting line, a button and an image. Layouts, copy and mistakes.

What is a hiring pipeline? The stages an applicant moves through, from new to screening, interview, offer and hired or rejected, and what happens at each.

What is a hydration error? When server rendered HTML and React's first render in the browser disagree. Common causes, how to read the message and how to fix it.

What is a kitchen display board? A screen that shows orders in columns such as new, preparing and ready instead of paper dockets. How it works and when it pays.

What is a landing page? A standalone page built around one action, such as signing up or booking, usually for a campaign. What it needs and what to leave out.

What is a link in bio? The single web address a social profile allows, usually pointing to a page of buttons for everything you want followers to find.

What is a loyalty program: rewards that bring customers back, how points, tiers, stamp cards and paid memberships work, and the rules a small shop follows.

What is a magic link? A one time sign in link sent by email instead of a password: how it works, how long it lasts, and how it compares with passwords.

What is a managed SSL certificate? One your host issues, validates and renews for you, compared with buying and installing a certificate yourself.

What is a membership site? Content or a community gated by a free or paid tier, billed monthly or yearly. How tiers, access checks and renewals work.

What is a meta description? The short summary of a page in its HTML that search engines may show under the title. How long to make it and how to write one.

What is a one page website? A site where every section sits on one scrolling page, with menu links that jump down. When it works, and when it falls short.

What is a payment gateway: the service that captures card details and sends them for authorisation, how it differs from a processor, and PCI DSS basics.

What is a platform fee on Stripe Connect? The share a platform keeps from a connected account's payment, and who pays Stripe's fees on each kind of charge.

What is a Postgres schema? A named namespace of tables, views and functions inside one database, how search_path finds them, and how schemas separate tenants.

What is a provisioning profile? The Apple file that ties an app ID, a signing certificate and allowed devices together so an iPhone will run the app.

What is a PWA? A website that can be installed to a phone home screen and opened full screen like an app, with an icon and an offline page. How it works.

What is a referral link? A personal link that tags a new customer to the person who sent them. How codes, credit and fraud rules work, and affiliates compared.

What is a refund policy: a shop's stated rules on returns and refunds, the consumer rights it cannot override in Australia and the UK, and what it should say.

What is a restocking fee: a charge deducted when an unwanted item is returned, when it can apply, and why faulty goods and UK online cancellations rule it out.

What is a service worker? A browser script that runs apart from the page, intercepts requests and caches files so a site loads fast and shows an offline page.

What is a silent auction website? Online bidding on donated items with a closing time, bid steps and a reserve price. Compared with live and paper auctions.

What is a sitemap? A file listing the pages of your site so search engines find them, usually sitemap.xml. What it lists, when it helps and how to submit it.

What is a SKU? A stock keeping unit, a short code you assign to each product variant to track stock and orders. How to create SKUs that stay useful as you grow.

What is a splash screen? The screen an app shows while it starts. iPhone launch screens, the Android 12 splash screen API and Expo's splash settings compared.

What is a staff roster app? An app staff use to see shifts, swap them, ask for leave and clock in, compared with a spreadsheet roster and a group chat.

What is a static website? A site served as ready made files instead of pages built per visit. Why static sites are fast and secure, and what they cannot do.

What is a storage bucket? A named container for files with its own access rules and size limits. Public and private buckets compared, with examples.

What is a Stripe webhook? Stripe's signed message to your site when a payment event happens, the events a small shop needs and how to handle them safely.

What is a subdomain? The part of a web address in front of the main domain, like shop in shop.example.com. How subdomains work and when to use one.

What is a Supabase project? One Postgres database with sign in, file storage and an API on top. What a project includes, what it costs, and how keys work.

What is a tab bar? The row of top level destinations at the bottom of a phone app: Apple and Material guidance, how many tabs to use and what to avoid.

What is a TestFlight build? Apple's beta channel for iPhone apps: internal and external testers, beta review and the 90 day expiry, explained in plain English.

What is a TXT record? A DNS record that holds text, used to prove you own a domain and to publish SPF, DKIM and DMARC email rules, with examples.

What is a waitlist page? A page that collects interest before launch, often with a queue position and a referral link to move up. Compared with pre-orders.

What is a web app manifest? The JSON file that gives an installable website its name, icons, colours, start address and display mode, member by member.

What is an A record? The DNS entry that points a domain name at an IPv4 address. How it differs from a CNAME and when a website builder needs one.

What is an abandoned cart? A shopping cart or checkout a buyer started but did not pay for. The usual reasons, typical rates, and what small stores can do.

What is an admin role? A role that grants management rights on a site or app, enforced by the database rather than the menu, with member and admin compared.

What is an apex domain? The bare domain with no subdomain, why it cannot hold a CNAME record, and how ALIAS, ANAME and CNAME flattening solve that.

What is an App Store Connect API key? A private .p8 key with an issuer ID and key ID that lets tools manage builds and submissions on an Apple account.

What is an internal test track? Google Play's quickest testing track for up to 100 testers, compared with closed and open tracks and the 12 tester rule.

What is an OG image? The picture shown when a link to your site is shared on social media or in messages, set by an Open Graph tag. Size, content and fixes.

What is an over the air update? Shipping new JavaScript and assets to an installed app without a store build, how Expo does it and the store rules.

What is an SSL certificate? The file that lets a site use HTTPS, proving the domain and encrypting traffic. Why every site needs one and why most are free now.

What is average order value (AOV): revenue divided by orders, a worked month for a small shop, what moves it, and why it matters for shipping and ads.

What is buy now pay later (BNPL): instalment credit at checkout where the provider pays the shop. Fees, risks and the 2025 Australian credit licence rule.

What is click and collect: buying online and collecting in store, how pickup slots and ready notices work, how it compares with delivery, and the rules.

What is EAS Build? The Expo cloud service that compiles your React Native app for iPhone and Android, with EAS Submit sending it to the stores. Steps and needs.

What is Expo? An open source framework and set of services for building iPhone, Android and web apps with React Native from one codebase. How it fits together.

What is Expo Router? The file based router for Expo and React Native apps: files become screens, folders become stacks and tabs, and every screen gets a link.

What is gift card liability? The value of sold but unredeemed Australian gift cards a business still owes, with the three year expiry rule and breakage.

What is inventory reservation? Holding items for a buyer during checkout so two people cannot pay for the last one. How holds work, expire and become sales.

What is JSON-LD? Linked data in a script tag that describes a page to search engines: the format, the schema.org types a small business uses, and mistakes.

What is noindex? A tag that asks search engines not to show a page in results while it stays online. When to use it, how it differs from robots.txt, and risks.

What is OAuth? The framework behind Sign in with Google: the four roles, how the code flow works, how OpenID Connect adds identity, and common mistakes.

What is order fulfillment: receiving, picking, packing, shipping and confirming an online order, in house against 3PL and dropshipping, and delivery rules.

What is product bundling: selling several items together at one price, pure and mixed bundles, kits and build your own sets, pricing and display rules.

What is React Router? The open source library that maps web addresses to screens in React apps, and in framework mode builds and prerenders whole websites.

What is robots.txt? The plain text file at a site's root that asks crawlers which paths not to fetch, with its directives, examples and limits.

What is row level security? Database policies that decide which rows each signed in person can read or change, with common policy shapes and how to test them.

What is seed data? Rows inserted into a new database so it has something to show and test: seed data compared with fixtures, reference and production data.

What is shadcn/ui? A collection of accessible React components built on Radix and Tailwind that you copy into your project and own, not install as a library.

What is Stripe Checkout? Stripe's prebuilt payment page created per purchase, how a Checkout Session works, and how it compares with Payment Links.

What is Stripe Connect? The Stripe product that lets a platform take payments for sellers into their own Stripe accounts. Connected accounts, fees and refunds.

What is table ordering? Diners scan a QR code on the table, order and pay from their own phone, and the order carries the table number to the kitchen.

What is Tailwind CSS? A utility first CSS framework where small classes like p-4 and text-lg style elements directly in the markup. How it works and why.