100% Private Local Tool

Add Text & Image Watermark to PDF

Stamp 'CONFIDENTIAL', 'DRAFT', or company logo watermarks across PDF pages with custom opacity and rotation.

Quick Summary

To watermark a PDF: 1. Select your PDF document. 2. Enter watermark text or upload a logo stamp. 3. Adjust opacity and rotation, then click 'Apply Watermark'.

Key Capabilities & Privacy Features

  • Custom text watermarks with font, color, and opacity sliders
  • Transparent PNG company logo image watermark stamps
  • Diagonal 45° angle or horizontal positioning
  • 100% Client-side embedding with zero server uploads

How to Use Add Text & Image Watermark to PDF

  1. Select PDF: Upload your document.
  2. Design Watermark: Type text (e.g. DRAFT) or upload a logo PNG.
  3. Apply & Save: Download your watermarked PDF.

Protect Intellectual Property

Watermarking draft proposals and confidential contracts deters unauthorized redistribution.

Client-Side Performance & Privacy

Add Text & Image Watermark to PDF executes 100% inside your local browser memory sandbox using WebAssembly. Your files are never transmitted across the network or stored on external servers. For multi-gigabyte or heavily nested files, splitting into smaller sections ensures instant responsiveness on low-memory mobile devices.

Frequently Asked Questions

Can the watermark appear behind page text?

Yes, you can toggle between foreground and background layer placement.

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