Can the stamp go behind the content?

Not yet — the stamp draws on top. For watermarks underneath text, use a low opacity (10-20%).

What image formats are supported for stamping?

It supports PNG and JPEG images for overlaying onto your PDF pages.

Can I adjust the stamp's transparency?

Yes, you can set the opacity of the image stamp to control how visible it is on the pages.

PDF Image Stamp / Logo Overlay

NEW

Drop a PDF and an image (PNG or JPEG) — the image is overlaid on each page at the position, size and opacity you choose. Great for adding a logo, signature, or graphic watermark.

Sign PDF Draw Signature Type Signature Image Signature

Drag a PDF here or browse

Your file is opened, signed, and saved entirely in your browser.

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How to use PDF Image Stamp

Select the PDF and a stamp image.
Pick position, width, opacity, and which pages to stamp.
Click Stamp and Download.

What is PDF Image Stamp?

For text watermarks (e.g. "CONFIDENTIAL"), use the PDF Watermark tool. This one is for image overlays.

FAQ

Can the stamp go behind the content?: Not yet — the stamp draws on top. For watermarks underneath text, use a low opacity (10-20%).
What image formats are supported for stamping?: It supports PNG and JPEG images for overlaying onto your PDF pages.
Can I adjust the stamp's transparency?: Yes, you can set the opacity of the image stamp to control how visible it is on the pages.

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Last updated: 2026-06-03