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PDF Text Watermark

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Stamp a text watermark like CONFIDENTIAL or DRAFT across all pages of your PDF. Tile it across the page or place one centered diagonal — fully adjustable.

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Preview (page 1)

Upload a PDF to see a preview.

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How to use PDF Text Watermark

  1. Upload your PDF file.
  2. Enter your watermark text (e.g. CONFIDENTIAL, DRAFT, DO NOT COPY).
  3. Choose tiling (repeated) or centered diagonal, and adjust font size, opacity, rotation, and color.
  4. Preview page 1, then click Watermark and Download to save the stamped PDF.

What is PDF Text Watermark?

This tool uses pdf-lib to draw bold Helvetica text with adjustable opacity, rotation, font size, and color onto every page (or a selected range). Unlike image-based watermarks, text watermarks stay crisp at any zoom level and add negligible file size.

A preview of page 1 is rendered client-side via pdf.js so you can see exactly how the watermark will look before downloading. All processing is done locally in your browser — your PDF never leaves your device.

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FAQ

What's the difference between this and the Image PDF Stamp?
This tool stamps TEXT (like CONFIDENTIAL or DRAFT) using built-in PDF fonts. The PDF Image Stamp tool overlays an image (like a logo or signature). Text watermarks are crisper and add almost no file size.
Can I watermark only specific pages?
Yes. Use the Pages field to specify a range like '1-3' or individual pages like '1,3,5', or leave 'all' for every page.
Will the watermark be selectable or removable?
The text is drawn as vector graphics in the PDF content stream. It is not selectable as text and cannot be easily removed without a PDF editor. For stronger protection, set a higher opacity.

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