How it works

Draw your signature in the box, pick a page and position, and the tool stamps a transparent PNG of your signature onto the PDF.

The signature pad accepts mouse, trackpad, and finger / pen input. Once drawn, the canvas is auto-trimmed (transparent margins removed) and embedded as a PNG with a transparent background. Pick which page to sign (1 to N), where on the page (9 positions from top-left to bottom-right), and the signature width in pixels (80 to 320). The image is placed with a 32pt margin from the edges. Output is a fresh PDF with the signature drawn onto the chosen page. This is a visual signature, not a cryptographic one: it doesn't add a digital signature certificate, doesn't verify identity, and a determined editor could remove it. For most everyday signing (forms, NDAs you're returning by email), it's exactly what's needed. Built on pdf-lib.

How to use it

1. Drop your PDF. Drag the PDF you need to sign into the upload area.
2. Draw your signature. Sign in the pad with mouse, trackpad, or finger — it's auto-trimmed to a transparent PNG.
3. Pick page and position. Choose which page to sign, one of nine positions, and the signature width.
4. Stamp and download. Hit Sign and download the PDF with your signature placed on the chosen page.

Frequently asked questions

Can I sign a PDF on my phone?

Yes. The signature pad accepts finger input on mobile. Position controls work the same.

Is this a legally binding signature?

It's an image of your handwritten signature on a PDF, which is typically accepted for ordinary business use. It's not a cryptographic digital signature (no X.509 certificate).

Does the signature go on every page?

No. You pick one page. Run the tool again for additional pages.

Can someone remove my signature?

It's a drawn image on the page, so technically yes (any PDF editor could). For tamper-evidence, you'd need a cryptographic digital signature, which this tool doesn't provide.