Stamp
Apply an image stamp (logo, signature, seal) to PDF pages.
1 — Upload PDF
Drop your PDF here
or click to browse
Up to 10 MB · 20 pages
2 — Upload stamp image
Drop stamp image here
PNG (transparent), JPEG, WebP — any browser-readable image
Up to 10 MB · 20 pages
Useful for scanned rubber stamps or logos on white paper. PNGs with a proper alpha channel do not need it.
3 — Position & size
Centre
4 — Pages to stamp
How to stamp a pdf
Stamping applies an image — a logo, a company seal, or a scanned signature — onto PDF pages at a position and size you choose.
- 1
Choose your PDF
Drop the document you want to stamp.
- 2
Add the stamp image
Upload a PNG or JPG. Enable background removal if your image has a white background you want made transparent.
- 3
Position and download
Choose the position, size, and opacity, pick which pages to stamp, then click Stamp.
Your files never leave your device
Unlike most online PDF tools, this one uploads nothing. Everything runs inside your browser, so your document is never transmitted, never stored on a server, and never seen by anyone but you. Once the page has loaded you can disconnect from the internet entirely and the tool still works.
Frequently asked questions
- Are my files uploaded anywhere?
- No. Every operation runs inside your browser. The file is read into memory on your own device, processed there, and offered back to you as a download. It is never sent to a server, never stored, and never seen by anyone else. You can disconnect from the internet after the page loads and the tool still works.
- How do I get a transparent background?
- Use a PNG with real transparency, or enable background removal, which makes near-white pixels transparent — this works well for a signature scanned on white paper.
- Can I stamp every page at once?
- Yes. Choose all pages, or give specific page numbers and ranges to stamp only some.
- What is the difference between Stamp and Sign?
- Stamp applies an existing image file to one or many pages. Sign lets you draw a signature by hand directly onto the page with a mouse, finger, or stylus.
Related tools
DinoPDF — every tool runs in your browser. Nothing is uploaded.