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PDF Watermark

Add a text watermark to all pages of your PDF file. Fast, private, and processed directly in your browser.

Font Size
Rotation (°)
Opacity (0–1)
Tip: Use opacity between 0.15 and 0.30 for professional watermarks.
Privacy-first: Your PDF stays on your device. Nothing is uploaded.

Why add a watermark to a PDF?

Watermarking helps protect your PDF documents from unauthorized copying and reuse. It is commonly used for invoices, contracts, reports, certificates, and private business documents.

Best watermark tips

For professional results, use light opacity (0.15–0.30), a 30°–55° rotation, and place a watermark like “CONFIDENTIAL” or “DRAFT” across the center.

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