PDF watermark
Add a text watermark to every page (size, opacity, angle).
- Instant
- Free
- Private (processed locally)
- No sign-up
Mark a PDF in an instant
Open your file, type the text, set size, opacity and angle, then download. Perfect to stamp a document “Confidential”, “Draft” or add your name — without uploading anything.
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Open the PDF
Drag and drop the file.
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Set the watermark
Text, size, opacity, angle.
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Download
The watermarked PDF.
Use cases
- Internal documents “Confidential”
- Working versions “Draft”
- Protect a shared PDF with your name
- Mark proofs before approval
Available settings
| Setting | Range |
|---|---|
| Size | 12 to 120 pt |
| Opacity | 5 to 80% |
| Angle | 0 to 90° |
| Mode | Tiled or centered |
The watermark is drawn over the content, without recompression. 100% local processing, file never uploaded.
Frequently asked questions
Does the watermark apply to every page?
Yes, the text is added to each page of the document. In tiled mode it covers the whole page diagonally; otherwise it is centered.
Is my file uploaded?
No. The watermark is applied in your browser via pdf-lib. The PDF never leaves your device.
Can I control how subtle the watermark is?
Yes: adjust the size, opacity (5 to 80%), angle and color. A low opacity keeps the text readable while still marking the document.
Is the original content modified?
The watermark is drawn on top, with no recompression of the content. The original text, images and links stay intact.