Add Watermark to PDF

Add a text watermark to your PDF online for free. Stamp drafts, confidential notes, or branding onto any page, entirely in your browser. No upload, no registration.

Stamp a watermark onto every page. Add a text watermark — draft marks, confidential notes, or branding — onto selected pages of your PDF. Processing happens locally in your browser; your file never leaves your device.

Files are processed locally in your browser for privacy.

Leave empty to apply to all pages. e.g. "1-3, 5"

File —
Pages —
Status —

Page overview

    About PDF watermarks

    What is a watermark?

    A watermark is a faint text overlay — such as "DRAFT", "CONFIDENTIAL", or a company name — placed on a document to indicate status or ownership.

    How this tool works

    It uses pdf-lib running entirely in your browser. You can choose a tiled pattern (repeated diagonally) or a single centered stamp, with adjustable size, opacity, rotation, and color.

    Built with pdf-lib, an open-source MIT-licensed library.

    FAQ

    Is my PDF uploaded to a server?
    No. Everything runs locally in your browser using pdf-lib. Your file never leaves your device.
    Which pages get the watermark?
    Enter a page range like "1-3, 5", or leave the field empty to apply the watermark to every page.
    Can I use an image watermark instead of text?
    This version supports text watermarks. Image-based watermarks can be added in a future update.