Can I adjust the transparency of the watermark?

Yes. Use the opacity slider to make the watermark subtle and translucent so underlying text remains readable.

What rotation angles can I use?

Common choices include diagonal 45° across the page, horizontal 0°, or vertical 90°.

100% Client-Side • Files Never Leave Your Device

Add Watermark

Protect your documents or mark confidential drafts. Add customized diagonal or centered text watermarks, adjust transparency, font size, and rotation angle client-side.

Drop your PDF here to add a watermark

Protect drafts and documents with custom watermarks.

How to add watermark online

Upload PDF

Drop your document into the tool.

Configure watermark

Set your custom text (e.g., 'CONFIDENTIAL', 'DRAFT'), opacity, font size, and angle.

Stamp and download

The watermark is embedded onto all pages and ready for instant download.

Supported Formats: Standard PDF (.pdf) documentsPrivacy: Local in-memory browser execution

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