tools.studio

Add Watermark to PDF

Stamp text across the pages with the opacity, angle, color, and position you choose.

Drop a PDF here

Everything happens on your device — your files are never uploaded.

How it works

  1. 1 Drop your PDF or pick it.
  2. 2 Type your watermark text and set size, color, opacity, and rotation. The preview updates live.
  3. 3 Click Add watermark and download the stamped PDF.

Built with open source

  • pdf-lib — Creates and modifies PDF documents. · MIT

Frequently asked

Can I tile the watermark across the page? +

Yes. Turn on tiling to repeat the text across each page. Leave it off for a single centered stamp.

Can I watermark only some pages? +

Yes. Enter a page range like 1-3, 5 to stamp only those pages.

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