Watermark PDF
Stamp a text watermark on every page of a PDF. Adjust position, size, opacity, and color.
Runs entirely in your browser — files never uploaded
Drag & drop a file here, or click to browse
One PDF · up to 50 MB
How to use Watermark PDF
- 1. Upload your PDF. Drop one PDF (up to 50 MB).
- 2. Set watermark text. Pick the wording, font size, opacity, and color.
- 3. Choose position. Diagonal (most common for CONFIDENTIAL stamps), or center/top/bottom.
- 4. Apply & download. Watermark stamps onto every page. Original PDF untouched.
FAQ
Can the watermark be removed?
Anyone with PDF editing software can remove text watermarks — they're a deterrent, not security. For real protection, use the Protect PDF tool (coming soon) to lock with a password.
Are my files uploaded?
No. Watermarking runs entirely in your browser using pdf-lib.
Can I add an image watermark instead of text?
Not yet. We'll add image watermark support in a future update.
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