Watermark PDF Files Online

Protect your digital booklets, legal agreements, or custom graphic PDFs by overlaying security watermarks. Create custom text stamp layouts or load brand logo graphics.

Configure exact angle rotations, sizing scales, and opacity levels to guard your files against unauthorized copying or plagiarism without blocking reading visibility.

How to use this tool

Upload your PDF document into our watermark editor.
Type your text stamp (e.g., "DRAFT", "CONFIDENTIAL") or import a logo image.
Configure opacity, click "Apply", and download.

Key Advantages

Precise opacity controls guarantee readable text and clean backgrounds.
Bulk stamps applied uniformly across all target document sheets.
Supports crisp visual vectors and bitmap transparency logos.
Free online protection with zero hidden costs.

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