ESTExact Size Tool
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Watermark PDF Free

Stamp text diagonally across every page of a PDF.

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Free, and staying free. No account, no daily limit, no watermark, nothing uploaded. Keeping it up does cost something (the domain, and the AI that reads your notification) and a contribution goes there. Passing the site to someone filling the same form helps just as much, and costs nothing at all.
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How to use it

  1. Choose your PDF, or drag it onto the page.
  2. Set the options on the right. The result updates as you change them.
  3. Check the result, then press Download.

About Watermark PDF

Marking a document as a draft, a copy, or not for redistribution is easier to enforce when the words sit across the page itself. This stamps your text diagonally over every page, visible enough to register but light enough to read through.

Good to know

  • The watermark goes on every page. There is no per-page selection.
  • It becomes part of the page and cannot be switched off by the reader.
  • Keep your unwatermarked original, since the mark cannot be removed afterwards.

Questions

Can I watermark only some pages?

No, it applies to the whole document.

Can the recipient remove it?

Not easily, though determined editing could. It deters casual reuse rather than preventing it.

Will it cover the text underneath?

It is drawn to remain readable through, but check a page with dense content before sending.

Does it change the file size much?

Only slightly. Text adds very little to a PDF.

Is my file uploaded anywhere?

No. Everything runs inside your browser using your own device. Your file never leaves it, and we never see or store it. You can even disconnect from the internet and the tool still works.

Is it really free?

Yes. No account, no daily limit, no watermark on your files. The site is paid for by ads.

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