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PDF Text Watermark

Stamp a visible text watermark onto each PDF page.

Tool inputs stay in your browser · optional AI search sends your query

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Good to know: Choose one unencrypted PDF and a short watermark using standard Latin text. Adjust opacity and size. Existing content is preserved; the watermark is an added overlay, not encryption, access control or secure redaction. Maximum 200 pages and20MB. Verify every page after download. Files are processed on your device, not sent to our server. Limits protect browser memory; close other heavy tabs on older phones.

How to use it (step by step)

  1. 1Choose a PDF.
  2. 2Type the watermark text (for example CONFIDENTIAL) and adjust size and see-through level.
  3. 3Download the PDF with the watermark on every page.

Words to know

Watermark
Your name or logo placed on a photo or document to show it is yours.
PDF
A document file that looks the same on every phone and computer.
Redaction
Covering private information with solid black so nobody can read it.
Alpha mask / opacity
Alpha controls how see-through a pixel is. An alpha mask shows that as black (invisible), white (solid) and grey (partly see-through).

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