Sign a PDF by drawing or typing, privately

Draw your signature or type a name, choose the page and the corner, and download. The stamp is added with pdf-lib in this browser.

Runs in your browser Free No sign-up
  1. Choose file
  2. Set options
  3. Get result

Your file never leaves your device. Processed locally in your browser. Nothing is uploaded.

Use a mouse, trackpad or finger. Black ink is stamped onto the page.

How to sign a PDF

1. Drop the PDF. 2. Draw in the box, or switch to “Type a stamp” and write your name. 3. Choose the last page (the usual place for a signature), the first page, or every page, and pick a corner. 4. Press “Sign PDF” and download.

Drawing becomes a PNG stamped on the page. Typing stays as real PDF text in a slanted standard font, so it can be selected. The pages underneath are not flattened.

What this signature is

This is a visual stamp, the kind you add before emailing a form you already agree with. It is not a certificate, not a government digital signature, and not a cryptographic seal. Anyone who can edit the PDF can still change pages afterwards.

Letters outside the Latin set are replaced, because the typed stamp uses a built-in PDF font. Accents used in Portuguese and Spanish are kept.

Where to put it

Contracts and forms usually want the stamp on the last page, bottom right. Use every page only when each page must show the same mark. If the file already has a password, unlock it first.

Frequently asked questions

Is this a legally binding digital signature?

No. It draws or types a stamp on the page. It does not issue a certificate and it does not prove who held the pen. Use it when a visual signature is what the recipient asked for.

Can I sign only the last page?

Yes. “Last page” is the default. Switch to every page or the first page if the form says so.

Does the original text stay selectable?

Yes. GustKit adds the stamp on top. It does not turn the page into a picture.

Is the PDF uploaded?

No. The signature is drawn in this tab. The file never goes to a server.