Add Watermark to PDF

Stamp any PDF with a custom text or logo watermark. Full control over position, opacity, rotation and color.

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PDF

Features

Add a custom text label or logo image as watermark.

See exactly how your watermark looks before applying.

Position, opacity, rotation, font size and color — all adjustable.

pdf-lib runs in your browser. No server uploads.

Drop the PDF you want to watermark.

Choose text or image, set position, opacity and rotation.

Apply and download your watermarked PDF.

Can I add a company logo as watermark?+

Yes — switch to 'Image Watermark' and upload a PNG or JPG logo.

Will the watermark cover all pages?+

Yes. The watermark is applied to every page in the document.

Is the watermark permanent?+

Yes. The watermark is embedded into the PDF. Removing it requires a dedicated PDF editor.

What opacity should I use?+

20-35% is typical for background watermarks. 70-100% for prominent stamps like DRAFT or APPROVED.