Sign PDF — stamp your signature
Add a signature image to a PDF. It runs entirely in your browser (0 uploads, works offline).
How to use it
- Add the PDF, then a PNG or JPG of your signature.
- It is stamped on the last page.
- Download the signed PDF.
FAQ
How do I sign a PDF for free?
Add the PDF and a signature image, and this page places the signature on the page and saves a signed PDF — on your device with no upload.
Is my PDF uploaded anywhere?
No. Signing runs entirely in your browser and nothing is transmitted or stored, which you can verify by turning off your Wi-Fi — essential for contracts.
What signature image should I use?
A PNG with a transparent background works best. Create one with the signature extractor from a photo of your signature.
Is this a legally certified e-signature?
No — it places a visible signature image. It is not a cryptographic digital signature or a certified e-signature service.
Limits
Stamps a signature image at the bottom-right of the last page; drag-to-place and digital certificates are not included.
Related
The signature extractor makes a transparent signature; the fill-PDF-forms tool completes fields.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.