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PDF Tools 100% In-Browser Text & Image Watermarks Diagonal & Custom Placement

Add Watermark to PDF

Stamp text or transparent PNG/JPG logo watermarks across your PDF with real-time positioning, opacity, and rotation preview. Preserves original content and vectors without rasterizing your PDF pages.

Your PDF and watermark files are processed locally in your browser. They are never uploaded to our server.

Drag & drop your PDF file here

or choose from your device

Supports single document (.pdf) • 100% In-Browser

No PDF file loaded

Upload a PDF document on the left to preview text or PNG/JPG image watermarks across your pages before generating the final PDF.

Text & transparent PNG/JPG watermarks with 5%–100% opacity 9 presets, Diagonal across page & Custom X/Y placement 100% client-side processing — zero uploads

How to Add a Watermark to a PDF

1. Choose Text or Image

Enter custom text with fonts, alignment, size & color, or upload a transparent PNG or JPG image with aspect-ratio-safe scaling.

2. Set Placement & Scope

Pick any of 9 anchors, Diagonal across page, or custom X/Y coordinates, adjust 5%–100% opacity & -180°..+180° rotation, and target specific pages.

3. Lossless Output & Limits

Stamps watermarks directly without rasterizing pages. Modifying & saving invalidates digital signatures and does not recalculate dynamic form fields.