Watermark PDF — Add Text or Image Watermarks
Protect and brand your PDFs with a text or image watermark. Choose the text, color, opacity, angle, and position — or upload your own logo — and apply it to every page or a custom selection. Chinese text is supported. All processing stays in your browser.
Key Features
Text & Image Watermarks
Add a text watermark such as CONFIDENTIAL, or upload your own logo or image as a watermark.
Full Style Control
Adjust the font, color, opacity, rotation, position, and tiling to match your needs exactly.
Flexible Page Selection
Apply the watermark to every page, only odd or even pages, or a custom page range.
100% Private
All processing happens locally in your browser. Files are never uploaded to any server.
No Install, Free
Works on any device with a browser. No sign-up, no watermarks added by us, and completely free.
What Is a PDF Watermark?
A watermark is text or an image placed over a PDF's pages, usually at low opacity so it does not interfere with reading. Common uses include marking drafts as CONFIDENTIAL, branding documents with a company logo, claiming copyright, and discouraging unauthorized redistribution. Watermarks can be placed diagonally across the page, centered, or in a corner, and repeated in a grid pattern to cover the whole page. Text watermarks are fully vector-based, so they stay crisp and selectable; image watermarks let you use your own logo or stamp.
How to Watermark a PDF
Adding a watermark takes just a few steps. Everything runs in your browser.
Upload your PDF
Drag and drop a PDF file or click the upload area to select one.
Choose text or image
Type your watermark text, or upload a PNG or JPG image such as a logo.
Style and position it
Set the color, opacity, rotation, position, and whether to tile it. Check the live preview.
Add and download
Pick the pages to watermark, click Add Watermark, and download the result.
Good to Know
Encrypted PDFs must be decrypted before watermarking. Text watermarks are vector content, so they stay sharp at any zoom and remain selectable. Low opacity (around 30%) keeps the document readable while still visible. For best results on a diagonal watermark, use a rotation of around -45 degrees. Tiling repeats the watermark across the whole page; custom page ranges use the format 1-5, 8, 10-15.