Guide · signature fields · about 3 minutes

Signature fields in a PDF: place, sign, check

This guide shows how you place a signature field for every signer on a PDF, decide what may appear in it and collect the signatures with CodeB Wallet – with screenshots of every step.

Open the signing page →Overview: sign PDFs with CodeB Wallet

You need: an account on the site (a guest account is enough) and the PDF. Signers need the CodeB Wallet app for Android (myeudi.app); for a qualified signature also a signature card with a qualified certificate.

Step by step

  1. 1

    Upload the PDF

    Open the signing page, sign in and choose one to ten PDFs (up to 50 MB together). Choose an advanced or a qualified signature and add the people who sign, in order: tick “I sign as well (first)” and/or invite others by e-mail.

  2. 2

    Place a signature field for each signer

    Click Signature fields next to the PDF. Choose the signer at the top, then draw a box on the page where that person signs – or tap once for a standard 200 × 60 point box. Use the arrows for other pages. One field per signer and document; the list on the right shows every field with a link to its page. Click Done.

    Placing signature fields for two signers on a PDF, with the list of fields on the right
  3. 3

    Choose what may appear in the field

    Under Visible signature tick what signers may use: Handwritten (drawn with the finger in CodeB Wallet or with the mouse on the website), From the ID document (the signature image of a mobile driving licence or from the chip of a passport or ID card) and Name only. Every signer who has a field signs visibly in it. Each signer then chooses one of the ticked kinds; tick at least one, otherwise Release for signing stays disabled. Then click Release for signing.

  4. 4

    Optional: draw the signature on the website

    When it is a signer’s turn, their page (or your own QR box) shows Draw signature. On a computer this is the quickest way: draw with the mouse, click Use this signature. CodeB Wallet then offers this drawing next to its own drawing pad. Remove drawing takes it out again.

    Drawing pad: the signer draws the signature with the mouse
  5. 5

    Scan the QR code and sign in the wallet

    The signer scans the QR code with the QR scanner in CodeB Wallet (on the phone itself: tap Sign with CodeB Wallet). The wallet shows who asks and every document, offers the allowed kinds of visible signature and signs with the CodeB signing service or the signature card over NFC.

    Signer page with the QR code and the note that the drawn signature is ready
  6. 6

    Check and download

    The server checks that exactly that signer’s field was signed, in place, and that the PDF still contains the earlier version unchanged. The next signer is invited automatically. At the end everyone gets the signed PDF; the viewer shows each signature with its check result.

    Signed PDF with two visible signatures in their fields

Good to know

Where to put the fields

Put each field on the signature line of the document. Fields must be at least 60 × 20 points and lie inside the page; up to ten fields per document.

What the field shows

The image (if any) on the left; on the right “Digitally signed by”, the signer’s name from the certificate and the time in UTC. Letters outside the PDF standard font are shown without accents in this line only; the signature keeps the exact name.

Always visible

A signer with a field always signs visibly in it. A wallet that cannot fill the field declines instead of signing invisibly, and the request shows that a visible signature could not be added.

Privacy

A drawing made on the website is kept only while it is that person’s turn. The image from an ID document is used only with the signer’s consent in the wallet. Documents are deleted 30 days after the request closes.

Frequently asked questions

Is a drawn signature legally binding?

The drawing is the visible appearance. What counts legally is the electronic signature in the same field: an advanced electronic signature, or a qualified one when the signer uses a signature card with a qualified certificate (eIDAS).

Can different signers sign on different pages?

Yes. Each signer gets their own field, on any page of any document in the request.

Do I need signature fields at all?

No. Without fields the signature is invisible in the PDF, as before, and the signature panel of a PDF reader still shows it.

Can I set fields through the API?

Yes. The create call takes a fields parameter with document, signer, page and position; see the signing requests API – or let an AI app do it: connect it via MCP.

Related

Signature fields in CodeB Wallet →

How the signer chooses drawn, ID-document or name signature in the app.

Sign PDFs with CodeB Wallet →

Overview, security and comparison with classic e-signature platforms.

Signing requests API →

Create requests with signature fields from your own software.

Sign with your national eID card →

Qualified signatures with the signature card read over NFC.