Watermark PDF

Add a custom text watermark to every page of your PDF document.

Drop your PDF here

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How to Add a Watermark to PDF

1

Upload PDF

Click the upload area or drag and drop your PDF file onto it.

2

Enter Watermark Text

Type your watermark text (e.g. CONFIDENTIAL, DRAFT) and choose a color.

3

Customize Style

Adjust font size, opacity, position, and rotation angle to your preference.

4

Download

Click Apply Watermark and download your watermarked PDF instantly.

Frequently Asked Questions

Currently, the tool applies the watermark to all pages to ensure consistency. If you need a watermark on a specific page, split the PDF first, watermark the page, then merge them back together.

The watermark uses Helvetica Bold, a standard PDF font that renders consistently across all PDF viewers without embedding extra data.

Currently only text watermarks are supported. For image watermarks, you can draw your logo as text using Unicode characters, or use a dedicated desktop tool like Adobe Acrobat.

The watermark is drawn on top of existing content at your specified opacity. The underlying content remains intact. Using a lower opacity (20-40%) keeps the original content clearly readable.

No. All processing happens entirely in your browser using the PDF-lib JavaScript library. Your PDF never leaves your device and is completely private.