How to make a PDF signable

Almost no document that needs signing arrives with a signature field in it. It was written in Word and exported, or printed and scanned, and what you have is a flat page with a line and a name under it. That is fine — the field is something you add, not something the file has to come with.

First decide which of these you actually want, because they are different jobs and most guides blur them:

1. You need to sign it yourself

One signature, yours, and you keep the file. Open the document, draw or type your signature, drag it where it belongs, and download. No fields to place and nobody to send it to. It runs in your browser and needs no account.

Sign a PDF yourself →

2. Someone else has to sign it

This is what “make it signable” usually means. You are preparing a document for another person, so the fields have to exist before it goes out, and each one has to belong to a specific signer.

1. Open the PDF.
2. Add the people who need to sign — a name and an email address each.
3. Drag a signature, initial or date field onto the page for each of them. Fields are colour-coded per signer so it is obvious who owns which.
4. Send. Everyone gets their own private link and signs in their browser, without creating an account.

When the last person signs, the completed document comes back with an audit trail and a Certificate of Completion — who signed, when they opened it, from where, and hashes of the original and signed files. Sending is free 5 times a month.

Request signatures →

If the document is wrong before you start

Worth doing first, because it is much harder afterwards. If the date is wrong, a figure should not be visible to the other side, or a page is in the wrong order, fix it in the same session: edit the text in place, redact what should not be there, or merge in an exhibit. A document that has already been signed cannot be corrected without starting the whole request again.

Scanned documents and flattened forms

A scan is an image of a page, so there is nothing beneath it to detect — which turns out not to matter. You place the fields where they should be and they behave the same as on a born-digital file. The same is true of a form whose fields were flattened on export: use fill a PDF form and text goes wherever you put it.

Common questions

My PDF has no signature field. Can it still be signed?

Yes. Most documents that need signing have no fields in them at all — they were written in Word, exported, or scanned. A signature field is something you add on top; it is not a property the file has to arrive with. You draw a box where the signature belongs and that becomes the field.

What is the difference between signing it myself and making it signable?

Signing it yourself puts your own signature on the page and gives you the finished file. Making it signable means placing fields for other people, then sending it so each of them signs their own — which is what you want when a contract has two names at the bottom.

Does the other person need an account or software?

No. Each signer gets their own private link, opens it in whatever browser they already have, and signs. They never register for anything and never install anything.

What about a scanned document with no real form fields?

It works the same way. A scan is just an image of a page, so there is nothing underneath to detect — you place the fields where they should be and they behave identically. Filling a flat scan uses the same overlay approach.