Sign PDF — Stamp a Signature Image
Drop a PDF, drop a signature image (PNG with transparency works best), pick where on the page to stamp it, and download the signed file. This is a visual stamp — not a cryptographic signature. For legally binding e-signatures, use a service that produces a PKI signature.
Drop your PDF file here
One PDF at a time · then drop a signature image below
When to use this tool
Quick visual signing — contracts you've agreed to, claim forms, school permission slips. The output is a normal PDF with a stamped image on the chosen page(s). If counterparties demand a verifiable signature, use a dedicated e-signature service that produces a PKI-backed signature dictionary.
Step by step
- Make a clean signature image. Photograph or scan your signature, remove the background, save as transparent PNG. A 600px-wide PNG is plenty.
- Drop the PDF. Then drop the signature image into the file picker.
- Pick page(s) and position. "last" stamps only the last page; "all" stamps every page.
- Click "Sign & download". Output is
name-signed.pdf.
FAQ
Is this a legal e-signature?
No — it's a visual stamp. Whether a visual stamp is binding depends on jurisdiction and counterparty agreement. Use a dedicated e-signature service if you need cryptographic proof of who signed when.
Why does my signature look boxy?
JPEG signatures have a white background that won't blend with the page. Convert to PNG and remove the background first.
Are my files uploaded?
Never — this runs entirely in your browser via pdf-lib. See the privacy policy.