E-signatures
Fillable fields for signers
Not everything on a contract is a signature. A reference number, a job title, a mark against a clause. These are the boxes the other person fills in on their way past, and the ones you can decide are compulsory.

Four named boxes and one free one
Name, Email, Title and Company are single line boxes that arrive already labelled, so the signer sees what belongs there without you writing anything. Text is the general case: give it your own label and it becomes whatever you need, a reference number, a vehicle registration, a room number. All five are 24 points tall and between 180 and 200 wide by default, which suits a printed rule.
The confirmation box
The checkbox field is worth understanding before you use it, because it does not behave like a web tick box. It is a small box, 18 points square by default, that the signer fills in like any other field. Whatever they put in it, an X is stamped onto the page at that spot. So it is a confirmation mark rather than a true or false control, and it reads best placed directly against the clause it confirms, with the clause itself written in the document.
Required is checked twice
Every field has a Required switch, on by default. In the signer's browser the bottom bar names whichever required box is still empty, so they are told what is missing rather than being left to hunt. The same check runs again when the submission arrives, quoting the field's label. Turning Required off makes a box genuinely optional, which is the right choice for a middle name or an order reference that may not exist yet.
You can fill one in for them
A text, email, title or company field can carry a value you supply when you prepare the envelope. Where a value is already present, the signer is shown it as printed text rather than an editable box. That is how you state something on the page without inviting the other party to change it: a contract number you have already allocated, or a company name you are not asking them to retype.
How the values are printed
Each value is drawn onto the page at the position you placed, with a thin rule underneath, and shrinks in quarter point steps down to a floor of four points until it fits the width. Long values get smaller rather than running past the edge of their box or wrapping onto the following line, which keeps a filled document looking like a form rather than a mess.
How it works, in three steps
Step 1
Drop the field where the printed line is
Text, Checkbox, Name, Email, Title and Company all sit in the palette. Place them for whichever signer is currently selected, and make a checkbox a little larger than 18 points if you want it easy to hit.
Step 2
Give a text field a label
With it selected, the Field label box sets what the signer is shown. Purchase order number reads better than Text.
Step 3
Decide what is compulsory
Leave Required on for anything you genuinely need, and switch it off for the rest, so the signer is only blocked by things that matter.
Limits worth knowing
- A typed value is capped at 500 characters, and a label at 120.
- There are no dropdowns, radio groups or multi-line boxes. Every field is a single line.
- A checkbox is filled in like a text box rather than ticked, always stamps an X whatever was entered, and has no grouping, so mutually exclusive options are not enforced.
- Values are not validated by type. An email field accepts whatever is typed into it.
Questions people ask
Can I make a field only appear for one signer?
Every field belongs to exactly one recipient and is only sent to that person's browser, so it already works that way.
Is there a dropdown field?
No. If the answer has to come from a fixed list, write the options into the document itself and place a checkbox against each one, remembering that nothing stops a signer marking two of them.
Can I pre-fill a name?
A Name field is filled from the recipient card automatically. The other named fields take whatever value you supply while preparing the envelope.
What stops a signer leaving a required box empty?
The submit bar names the missing box while they are still on the page, and the server refuses the submission if it arrives without it.
Make your own signing flow
The button opens the generator with this use case already described. Change the wording to match yours, generate, then edit anything you like.
Send a document for signingRelated pages
Send a PDF for signature
The part you cannot see is the part that decides whether somebody signs. This is exactly what lands in their inbox, what it tells them before they click, and what happens on your side while you wait.
Sign a PDF online yourself
Sometimes nobody else is involved. You have a PDF that needs your signature on it, and you want it back as a proper certified file rather than a photo of a scribble pasted into a page.
Address fields in a form
Asking for an address in a single text box gets you five different formats from five people. The address field gives each part its own labelled box, so people fill in what you actually need and nothing gets left out.
More finished work of this kind is on the e-signature examples hub.