Add Watermark to PDF
Add an image or text watermark to any PDF, right in your browser. Your file never leaves your device.
Watermark PDFs privately, in your browser
Stays on your device. Nothing gets uploaded. Your PDF is watermarked right in the browser, so it never reaches a server.
No signup needed. Just drop in your PDF and go. No accounts, no paywall, no email to verify.
Text or image watermarks. Stamp any PDF with custom text or a PNG logo. Pick the font, size, color, and opacity.
Preview before you download. See exactly where your watermark lands on every page. Adjust if it looks off, then save.
Works on big PDFs. Files up to 300 MB. Scanned contracts, image-heavy decks, and full ebooks all work fine.
Free, with no catch. No daily limits. No extra stamp on the output. Just your PDF, with your watermark.
How to add a watermark to a PDF
Drop in your PDF
Drag a PDF onto the page or click to pick one. The file stays in your browser the whole time, so nothing gets uploaded to a server.
Pick image or text
Switch between the Image and Text tabs at the top of the controls. Image takes a PNG or JPEG (logo, signature, stamp). Text takes anything you type, including multiple lines.
Style the mark
For an image, scale it as a percentage of its natural size. For text, pick Helvetica, Times, or Courier, toggle bold or italic, set the size between 12 and 200pt, and pick a color from the presets or paste a hex.
Place it and fine-tune
Decide how the watermark sits on the page. Opacity and rotation control how loud it is; Single mode pins it to a corner, edge, or center, while Tile mode repeats it across the whole page. Use the skip toggles if your cover or back page should stay untouched.
Preview and download
Flip through every page with the pager to check how it looks. When it's right, click Download and the new PDF builds locally.
No sign-up, no upload, no server. Your PDF gets watermarked right here in the browser and stays on your machine.