PDF Watermark Tool
Add a text watermark to every page of a PDF locally in your browser.
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About this tool
Add a text watermark to every page of a PDF locally in your browser.
Your PDF file is processed locally in your browser and is not uploaded to a server.
Reminder
This tool adds a visible text watermark. It does not provide legal document protection or access control.
How to use it
- Choose a PDF file.
- Enter watermark text and adjust size, opacity, angle, and position.
- Download the watermarked PDF.
Common use cases
- Mark draft documents
- Add reference-only labels
- Prepare PDFs before sharing
Watermark Settings
A watermark is a visible label. Use clear text, moderate opacity, and a position that does not cover important document content.
| Setting | What it controls | Practical tip |
|---|---|---|
| Opacity | How visible the watermark is | Use a lower value for background labels. |
| Angle | The rotation of the text | Diagonal text works well for draft labels. |
| Position | Where the watermark appears | Use corners when the center would cover content. |
FAQ
Are my PDF files uploaded?
No. Watermarking happens locally in your browser.
Does this change my original PDF?
No. You download a new watermarked PDF while the original file stays unchanged.
Can this prevent copying?
No. A watermark is a visible label, not DRM or document protection.