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.

✍️ 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 or stored, 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 or type your name in a cursive font, place the signature in any of nine positions, scale it relative to the page width, and apply it to the first page, 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, or switch to 'Type' and enter your name.
Pick a position, size, and which page(s) to sign.
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.