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Sign PDF

Add your signature to any PDF in seconds. Upload the document and a signature image, then drag it exactly where it belongs on the page — free, secure, and entirely in your browser.

Automate Sign PDF with the PDF API →

A PNG with a transparent background looks best.
Printed in small text beneath the signature.
Printed beneath your name.
Drag a box on page one to position and size your signature.

How to add your signature to a PDF

  1. Step 1Choose the PDF you want to sign — it loads instantly in your browser.
  2. Step 2Upload a signature image (PNG or JPG). A transparent PNG looks best.
  3. Step 3Drag a box on page one to position and size your signature.
  4. Step 4Optionally type your name and a date to print beneath the signature.
  5. Step 5Click Sign PDF and download your signed document.

Frequently asked questions

Is signing my PDF private?

Yes. Your PDF is processed only to place the signature and is deleted automatically afterwards. Nothing is shared or stored long-term.

What signature image should I use?

Any PNG or JPG works. A PNG with a transparent background looks cleanest because the page shows through around your signature.

Can I sign more than the first page?

This free tool places one signature on page one. For multi-page placement, signature fields, or batch signing, create a free account or use the PDF API.

Does the signed PDF have a watermark?

No. The downloaded PDF contains only your signature and any name or date you add — no PDF4 branding or watermark.

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