Is a signature added this way legally valid?

For most everyday paperwork, yes. In the US (the ESIGN Act) and the EU (eIDAS), a signature cannot be refused just because it is electronic, and an image of your signature that you put on a document yourself is the simplest kind. Some documents need a certified digital signature backed by a certificate, which this tool does not make. If whoever sent you the document names a signing service, use theirs.

Is this a digital signature?

No. A certified digital signature carries a digital ID from a certificate authority and seals the file, so any later change shows. This puts a picture of your handwritten signature on the page. It looks like you signed a printout, and like a printout, nothing in the file proves who signed it or that it was not edited afterwards.

Can I sign a PDF on my phone?

Yes. Sign with your finger on the pad, then drag the signature into place and pull its corner to resize it. Touching the signature moves it; touch anywhere else and the page scrolls and pinch-zooms as usual.

How do I use a photo of my signature?

Sign a sheet of white paper with a dark pen, photograph it in even light and choose Image. The paper is made transparent, including the grey of a shadow, so only the ink is placed. A PNG that already has a transparent background is used as it is.

Can I add the date and my initials?

Yes. Type your initials when you make your signature, and an “Add initials” button appears on every page. “Add date” writes today’s date, and you can edit it before you download.

Is my signature saved anywhere?

Only if you ask. With “Remember this signature in this browser” turned on, it is kept in this browser’s storage on this device and nowhere else, until you delete it. Leave it off and it is gone when you close the tab.

Can I sign a password-protected PDF?

Not as it is. A password-protected PDF has to be unlocked before anything can be added to it. Unlock it with our Unlock PDF tool, then sign the unlocked copy here.

Yes. No account, no watermark, and no limit on pages or files. The work happens on your device, so there is nothing for us to meter.

Sign a PDF without uploading it

Leases, contracts, permission slips: the documents people sign are the ones they least want on a stranger's server. Open the PDF here and draw your signature with a mouse or a finger, type it, or use a photo of one you signed on paper. Drag it onto the line, add the date if the form asks for it, and download. It all happens in this browser tab, and your files are never uploaded.

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Your PDF
Drop a PDF here — or click to choose
PDF
Your files are never uploaded — everything runs on your device.
Your signature
Place it
Your signed PDF

How to sign a PDF

Open your PDF

Drop it onto the page. It opens right here in the browser, and nothing has to be installed.
Make your signature

Draw it with a mouse, a finger or a stylus, type your name in one of four handwriting styles, or use a photo of your signature on paper. The paper is made transparent, so only the ink ends up on the document.
Place it and download

Go to the page that needs signing, drag the signature onto the line and pull its corner to size it. Add your initials or the date if the document asks for them, then download the signed PDF.

Why sign it here

Draw it, type it or photograph it

A mouse works, a finger on a phone works better, and a stylus picks up pressure. Or type your name and pick a handwriting style. Already signed a sheet of paper? Photograph it: the paper turns transparent, shadow and all, and the ink keeps its colour.

Part of the page, not stuck on top

The signature is drawn into the page itself, the way a printed logo is. It is not a loose comment that someone can drag away, and every PDF reader shows it the same. Your pages stay as they were, in the same order, with nothing else changed.

A contract is the last thing to upload

Most online signing sites send your document to their servers to put the signature on it. Here the work happens on your own device, so the lease with your address and salary on it stays with you. Your files are never uploaded.

Remember it, if you want

Turn on “Remember this signature in this browser” and it stays on this device, so next time you can go straight to placing it. It is off unless you switch it on, and a single click deletes it.

What it runs on

No AI model and nothing to download: pdf.js shows the pages and pdf-lib writes your signature into the file, both inside the browser. The handwriting fonts are under 70 kB each and only load if you type your name.

Frequently asked questions

Is a signature added this way legally valid?: For most everyday paperwork, yes. In the US (the ESIGN Act) and the EU (eIDAS), a signature cannot be refused just because it is electronic, and an image of your signature that you put on a document yourself is the simplest kind. Some documents need a certified digital signature backed by a certificate, which this tool does not make. If whoever sent you the document names a signing service, use theirs.
Is this a digital signature?: No. A certified digital signature carries a digital ID from a certificate authority and seals the file, so any later change shows. This puts a picture of your handwritten signature on the page. It looks like you signed a printout, and like a printout, nothing in the file proves who signed it or that it was not edited afterwards.
Can I sign a PDF on my phone?: Yes. Sign with your finger on the pad, then drag the signature into place and pull its corner to resize it. Touching the signature moves it; touch anywhere else and the page scrolls and pinch-zooms as usual.
How do I use a photo of my signature?: Sign a sheet of white paper with a dark pen, photograph it in even light and choose Image. The paper is made transparent, including the grey of a shadow, so only the ink is placed. A PNG that already has a transparent background is used as it is.
Can I add the date and my initials?: Yes. Type your initials when you make your signature, and an “Add initials” button appears on every page. “Add date” writes today’s date, and you can edit it before you download.
Is my signature saved anywhere?: Only if you ask. With “Remember this signature in this browser” turned on, it is kept in this browser’s storage on this device and nowhere else, until you delete it. Leave it off and it is gone when you close the tab.
Can I sign a password-protected PDF?: Not as it is. A password-protected PDF has to be unlocked before anything can be added to it. Unlock it with our Unlock PDF tool, then sign the unlocked copy here.
Is it really free?: Yes. No account, no watermark, and no limit on pages or files. The work happens on your device, so there is nothing for us to meter.

Your PDF

Your signature

Place it

Your signed PDF