Add an image stamp to a PDF
Put a logo, signature or image on every page of your PDF. Choose the position, size and opacity. Locally, no upload.
1. PDF
Choose your PDF
Drop here or click to choose
Files stay on your device — nothing is uploaded
2. Stamp image (PNG or JPG)
Choose image
Drop here or click to choose
Files stay on your device — nothing is uploaded
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Your file is processed in your browser and never uploaded.
How does it work?
- 1
Choose your PDF
Drag the PDF here.
- 2
Choose your image
Drag a PNG or JPG image here.
- 3
Adjust
Pick the position, size and opacity.
- 4
Download
Download the PDF with the stamp on it.
Frequently asked questions
Which image formats work?
PNG (including with transparency) and JPG.
Can I adjust the opacity?
Yes, you choose a percentage from 10% (nearly invisible) to 100% (fully opaque).
Are my files uploaded?
No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.
Is it free?
Yes, completely free, without watermark or account. The site is paid for by ads.
More reading
Why in the browser?
PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.
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