Watermark PDF

Stamp a diagonal text watermark across every page — adjust opacity to taste.

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How to watermark pdf

  1. 1

    Upload your PDF.

  2. 2

    Type the watermark text and pick opacity.

  3. 3

    Download the watermarked PDF.

Understanding watermark pdf

A watermark is text drawn over every page, usually rotated and semi-transparent so it is legible without making the document unreadable. It signals status — DRAFT, CONFIDENTIAL, SPECIMEN — and discourages casual reuse of a document.

This is a visual deterrent, not protection. Anyone can convert the page to an image and paint the mark out. Where the requirement is legal or contractual, pair the watermark with an explicit notice in the document text.

The stamp is vector text, so it prints sharply and does not inflate the file size noticeably.

When you would use it

  • Marking circulated drafts so an outdated version is never mistaken for final.
  • Stamping CONFIDENTIAL on documents shared during due diligence.
  • Adding a client name across a proposal sent for review.
  • Marking sample documents used in training material.

Practical tips

  • Opacity between 10% and 20% stays visible without fighting the body text.
  • A 45-degree diagonal is hardest to crop out and reads well on both portrait and landscape pages.
  • Keep the wording short — long watermarks shrink to stay on the page and lose impact.

Troubleshooting

The watermark hides the text
Lower the opacity or reduce the font size.
It sits behind a scanned image
Scanned pages are full-page images; the stamp is drawn above the page content, so increase contrast or opacity if it is hard to see.

Frequently asked questions