Free browser tool

Add signature image to PDF

Place a signature or stamp image on selected PDF pages and save the PDF.

Input and settings

How to use

Add signature image to PDF processes your input in the browser, then lets you inspect or download the result.

Choose or paste the input.
Adjust only the options you need.
Run the tool and inspect or download the result.

Input: PDF files and the settings required for this operation
Processing: In-browser

Before using the result

Keep the original PDF for important documents and open the downloaded result to verify it before replacing the original.

This adds a signature image

A PNG or JPEG signature/stamp image is placed on selected pages. It can fill a visible signature area, but it is not the same as a certificate-based cryptographic digital signature.

An image and a digital signature prove different things

An image only shows that a graphic was placed on the page. If you need tamper evidence or signer identity verification, use a digital-signature workflow designed for that purpose.

At least one target page is required

Previously, a blank Pages field could produce an unchanged PDF and still look successful. The tool now stops unless at least one valid target page is selected.

PDF positions use points

Image width is specified in pt (points). 72 pt = 1 inch. Start around the default size, then inspect the saved PDF so the image does not overlap important content or fall outside the page.

Go one level deeper

Review the PDF workflow and common failure points →