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Add Watermark
Protect your documents with a custom text watermark. Control color, opacity, size, and rotation.
4.9 / 5 • 1,284 reviews
Drop file or click to upload
Protect your documents with a custom text watermark. Control color, opacity, size, and rotation.
Single file upload • 100% private • Processed in your browser
100% Private
Files never leave your browser
Lightning fast
No upload, no waiting
GDPR friendly
Zero server processing
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NEXT_PUBLIC_ADSENSE_CLIENT_ID to activateAbout this Add Watermark tool
Protect your documents with a custom text watermark. Control color, opacity, size, and rotation. Our add watermark engine runs entirely inside your browser using WebAssembly, which means you get instant results and bulletproof privacy — your files never touch a remote server.
How to use Add Watermark
- Click the upload area above or drag and drop your file.
- Adjust any options (rotation, pages, watermark text, etc.).
- Hit the Add Watermark button.
- Your processed file downloads automatically.
Why use PDFMaster Pro?
- 100% Private — files stay on your device.
- Lightning fast — no upload, no waiting.
- Free forever — no signup, no watermarks, no limits.
- Works everywhere — Mac, Windows, iOS, Android, Linux.