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Watermark Selected Pages

Mark the pages that need it and leave the rest untouched.

Processed locally in your browser. Your file is not uploaded to any server. How this works

  1. 01Add your file
  2. 02Watermark Selected Pages
  3. 03Download

Runs in your browser · nothing uploaded

About watermark selected pages

Selective marking is what real documents usually need. A tender response might mark the commercial sections as confidential while leaving the cover and the public company profile clean. A legal bundle marks the draft argument but not the exhibits, which have to be reproduced exactly as filed. A manuscript marks the body but not the title page. This tool takes a page-range expression and applies the watermark only to the pages it resolves to. Pages outside the selection are copied into the output completely untouched — their content streams are not rewritten at all, so nothing about them changes, not even incidentally. The range parser accepts single pages and inclusive ranges in any order, resolves overlaps rather than double-drawing, and reports the resolved page count before you commit so you can confirm the selection is what you meant. Page numbers are the document's own sequence, starting at one, regardless of any printed numbering on the pages themselves.

How to watermark selected pages

  1. 01

    Load the PDF

    Check the page count shown, since your ranges refer to document positions starting at page 1.

  2. 02

    Enter your page selection

    Mix single pages and ranges freely, for example 1, 4-9, 15. Overlaps are resolved, not double-applied.

  3. 03

    Confirm the resolved pages

    The tool reports how many pages your expression matched. Check that number before applying.

  4. 04

    Apply and spot-check

    Download and confirm the marked and unmarked pages are the ones you intended.

What this tool does

  • Range expressions combining single pages and inclusive spans in any order
  • Unselected pages copied byte-for-byte, with their content streams left untouched
  • Overlapping ranges resolved so no page is marked twice
  • Resolved page count shown before the operation commits
  • Placement chosen per document so the mark avoids content on the selected pages

Limitations worth knowing

Every PDF tool has constraints. Stating them plainly is more useful than discovering them halfway through your work.

  • Selective marking is organisational, not protective — marked pages can be unmarked by anyone with an editor.
  • Page numbers follow document order from 1, which may not match numbering printed on the pages.
  • One watermark configuration per run; different text on different pages means running the tool more than once.
  • A range extending past the last page is clamped rather than treated as an error.

How your file is handled

This tool runs entirely inside this browser tab. When you choose a file, your browser reads it from your own disk and hands the bytes to JavaScript running on this page — no network request carries your document anywhere. You can confirm that yourself: open your browser’s developer tools, switch to the Network panel, and run the tool. You will see no upload.

Nothing is stored after the fact. Closing or reloading this tab discards the file, the result and everything derived from them, because none of it ever left your machine. Read how local processing works.

Questions about watermark selected pages

How do I write the page selection?

Comma-separated single pages and inclusive ranges: 2-5, 9, 14-20 marks pages 2, 3, 4, 5, 9, and 14 through 20. Order does not matter and overlaps are resolved automatically.

Are unselected pages altered in any way?

No. They are carried into the output untouched — their content streams are not rewritten, so there is no possibility of an incidental change to an exhibit that must be reproduced exactly.

Can I apply different watermark text to different pages?

Not in one pass. Run the tool once for the first selection, then feed the result back in with the second selection and different text.

Do the page numbers match the numbers printed on the pages?

Not necessarily. Ranges count physical positions in the file from 1. A document with unnumbered front matter will have printed numbers that lag behind the physical positions.

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