How do I get a transparent signature image?

Sign on white paper, photograph it, then run it through our Remove Image Background tool and export a PNG to upload here.

Is this a legally binding electronic signature?

No. This tool overlays a signature image on the PDF, which is a visual signature and carries no digital certificate. For legally binding digital signatures use a CA-backed solution.

Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

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✍️Sign PDF Online - Add a Signature or Stamp to a PDF

Place a handwritten signature, a company stamp or any image onto a PDF. Upload the PDF, pick your signature image, then drag it straight onto the page preview while adjusting width and opacity. Stamp a single page or every page. A transparent PNG works best so the text underneath stays readable. Your file never leaves the browser, so signatures and contract contents are not exposed to any server.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use Sign & Stamp PDF

1Upload the PDF you need to sign
2Choose the signature or stamp image and set width and opacity
3Drag it into place on the preview, then click Stamp & download

FAQ

How do I get a transparent signature image?: Sign on white paper, photograph it, then run it through our Remove Image Background tool and export a PNG to upload here.
Is this a legally binding electronic signature?: No. This tool overlays a signature image on the PDF, which is a visual signature and carries no digital certificate. For legally binding digital signatures use a CA-backed solution.
Are my files or data uploaded?: No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, needs no account and has no usage limits.