Sign PDF Online — Free
Draw your signature with mouse, finger or stylus, drag it into place on the page, and download the signed PDF. Nothing is uploaded; it all happens on your device.
Drag & drop your PDF here
or click to browse — files stay on your device
Files never leave your deviceUse a mouse, your finger, or a stylus. Draw slowly for a cleaner signature.
Drag the signature to move it. Drag the red dot to resize it. It appears at the same relative spot on every page if “Place on all pages” is ticked.
How to sign a PDF online
- Drop your PDF into the box above (or click to browse).
- Draw your signature on the pad — mouse, finger or stylus all work.
- Drag the signature into place on the page preview; resize it with the red dot.
- Pick the page, or tick Place on all pages, then click Download Signed PDF.
About this free PDF signature tool
Printing a form just to sign it and scanning it back is a ritual from another decade. This tool lets you sign entirely on screen: draw once, position the signature exactly where the dotted line is, and get a stamped PDF back in seconds. The signature is embedded as a transparent image on the page, so it looks like ink on paper and prints cleanly.
An honest note on validity: for everyday paperwork — job offer letters, admission forms, freelance agreements between consenting parties — a drawn signature is widely accepted. It is not a cryptographic digital signature, so for high-stakes legal or government documents, check what your jurisdiction requires. And as with every PDFPax tool, your file never leaves your device — the whole signing happens locally in your browser.
Who actually uses a free sign-PDF tool
Freelancers, mostly. Someone sends you a contract at 11pm and wants it back signed by morning — you're not firing up a printer for that. Students use it for admission forms and hostel affidavits. Remote workers sign HR letters and NDAs without ever touching paper. Small shop owners sign supplier invoices between customers. The pattern is always the same: a PDF lands in your inbox, it needs your signature, and the old print-sign-scan loop would eat twenty minutes you don't have.
That's the whole pitch, really. Draw once, drop it on the dotted line, send it back. If you sign the same kinds of documents often, keep a clean version of your signature saved as an image on your phone — you can redraw it here in seconds whenever you need it.
What this tool won't do (honestly)
Three limits worth knowing upfront. First, this is a drawn signature, not a certified digital signature — there's no cryptographic identity baked in, so banks and government portals that demand certified e-signatures won't accept it. Second, if your PDF is password-locked, you'll need to remove the password first — we can't stamp a file we can't open. Third, the signature is an image placed on the page, which means someone with a PDF editor could technically move or remove it. For everyday agreements between people who trust each other, none of this matters. For a court-room-grade document, use a qualified e-signature service.
Frequently asked questions
Is a drawn signature legally valid?
For most everyday documents — offer letters, admission forms, freelance contracts between consenting parties — a drawn signature is widely accepted. It is not a certified digital signature with cryptographic identity proof, so for high-stakes legal or government documents, check your local law or use a qualified e-signature service.
Do my files get uploaded anywhere?
No. The PDF never leaves your device — drawing, positioning and stamping all happen locally in your browser. Nothing is sent to any server.
Can I sign only one page of a multi-page PDF?
Yes. Flip to the page you want with the page controls and stamp there, or tick “Place on all pages” to repeat the signature at the same spot on every page.
Does it work on scanned PDFs?
Yes. The signature is drawn on top of the page image, so it stamps scanned pages exactly like text-based ones.
Can I save my signature and reuse it later?
The tool doesn't store anything — that's the privacy tradeoff. Your signature exists only in your browser tab while it's open. Tip: draw your signature once, download the signed PDF, and keep a transparent PNG of your signature on your phone. Next time, redraw it in about ten seconds.
Will the signature look the same when printed?
Yes. It's embedded as a high-resolution transparent image, so it prints like ink on paper — no pixelation, no grey box behind it. What you see on the preview is what comes out of the printer.