Is my PDF uploaded to a server?

No. Signing runs entirely in your browser with pdf-lib — the file never leaves your device, so it's safe for confidential documents.

Is this a legally binding e-signature?

It stamps a visible signature image, which is fine for many everyday agreements. For certificate-based digital signatures or audit trails, use a dedicated e-signature service.

Can I sign an encrypted or password-protected PDF?

Remove the password first with a PDF unlock tool; encrypted files can't be modified reliably without it.

Where on the page does the signature go?

Wherever you put it. The page you are signing is shown as a preview with your signature on top: drag it onto the signature line, pull the corner dot to make it bigger or smaller (8 to 50 percent of the page width), or use the arrow keys to nudge it. Nine preset positions - the corners, the middle of each edge and the centre - are there for a quick start. You then choose which pages receive it: only the first, only the last, every page, or one specific page number. With every page, it lands in the same relative spot on each one.

Can I sign a scanned document, or does it have to be a real PDF?

A scan works as long as it has been saved as a PDF. The signature is drawn on top of the page image, so a photographed or scanned contract signs exactly like a digitally generated one, and pages a scanner saved sideways are handled too: the preview shows the page the way you see it, and the signature is placed upright. What it cannot do is recognise text inside the scan, so it will not find the signature line for you - you drag the signature onto it in the page preview.

Does signing change the rest of the document?

Only the pages you selected are rewritten, and only to add your signature on top; the existing page content is not re-rendered or re-compressed. The result is a new file you download, and the original on your disk is left untouched, so you can always start over if the placement is not right.

✍️ Sign PDF — Free & Private, No Upload

Add your signature to a PDF without uploading it anywhere. Draw your signature with a mouse or finger, or type your name in a handwriting style, then choose the page and position and download the signed file. Toolio processes everything locally with pdf-lib — your document never leaves your browser, making it safe for contracts and confidential paperwork, even offline. Looking for a free Smallpdf alternative? Toolio’s version is completely free and needs no sign-up.

✍️

Drop a PDF to sign

or click to select a PDF file

Private by design. This tool runs entirely in your browser — nothing you enter is uploaded, and it works offline.

About

This tool embeds your signature as an image onto the PDF page itself using pdf-lib, a pure-JavaScript PDF library. You can draw on the signature pad, type your name in a cursive font, or upload a picture of your signature or stamp. A live preview of the page you are signing shows exactly where it will land: drag it into place, pull the corner dot to resize it, or snap it to one of nine preset positions. Then apply it to the first page, the last page, a specific page, or every page. Because there's no server round-trip, it's fast and private — ideal for signing where uploading a document to a third party isn't acceptable.

How to use

Drop your PDF onto the page or click 'Choose PDF'.
Draw your signature on the pad, switch to 'Type' and enter your name, or switch to 'Image' and upload a signature or stamp picture.
Choose which page(s) to sign, then drag the signature on the page preview to the right spot and pull the corner dot to resize it.
Click 'Sign & Download' to save the signed PDF to your device.

FAQ

Is my PDF uploaded to a server?: No. Signing runs entirely in your browser with pdf-lib — the file never leaves your device, so it's safe for confidential documents.
Is this a legally binding e-signature?: It stamps a visible signature image, which is fine for many everyday agreements. For certificate-based digital signatures or audit trails, use a dedicated e-signature service.
Can I sign an encrypted or password-protected PDF?: Remove the password first with a PDF unlock tool; encrypted files can't be modified reliably without it.
Where on the page does the signature go?: Wherever you put it. The page you are signing is shown as a preview with your signature on top: drag it onto the signature line, pull the corner dot to make it bigger or smaller (8 to 50 percent of the page width), or use the arrow keys to nudge it. Nine preset positions - the corners, the middle of each edge and the centre - are there for a quick start. You then choose which pages receive it: only the first, only the last, every page, or one specific page number. With every page, it lands in the same relative spot on each one.
Can I sign a scanned document, or does it have to be a real PDF?: A scan works as long as it has been saved as a PDF. The signature is drawn on top of the page image, so a photographed or scanned contract signs exactly like a digitally generated one, and pages a scanner saved sideways are handled too: the preview shows the page the way you see it, and the signature is placed upright. What it cannot do is recognise text inside the scan, so it will not find the signature line for you - you drag the signature onto it in the page preview.
Does signing change the rest of the document?: Only the pages you selected are rewritten, and only to add your signature on top; the existing page content is not re-rendered or re-compressed. The result is a new file you download, and the original on your disk is left untouched, so you can always start over if the placement is not right.

Ran 69 times in the last 29 days. Result copied or downloaded: 63% Measured on our own servers, 2026-09-06–2026-10-05.