File4Edit

Watermark PDF

Add a text watermark such as DRAFT or CONFIDENTIAL to a PDF, free and in your browser with no upload. Set the size, color, opacity and angle, place it on one of nine points or the diagonal, and preview the real page.

Stamp text across the pages of a PDF. Set the words, size, color, opacity and angle, pick a corner or the page diagonal, and see the page you will get before you save it.

In detail

Watermark PDF stamps text across the pages of a document. The words, font, size, color, opacity and rotation are yours to set, and the position is either one of nine points on the page or the full diagonal, on every page or a range.

The text is drawn in a standard PDF font on top of the existing page, so nothing underneath is altered or re-encoded, and the preview is the page you will get. A watermark like this marks a document as a draft or as confidential; it is not protection, because anyone with a PDF editor can select and delete it.

Watermark PDF at a glance

Input
One PDF
Output
The same PDF with text drawn on the chosen pages
What it does
  • Custom text, font, size and color
  • Opacity and angle control
  • Nine positions or the full diagonal
  • Every page or a page range
  • Live preview on the real page
Who it is for
Anyone marking drafts, confidential copies or review versions.
Limits
  • Text only; image and logo watermarks are not supported.
  • The standard PDF fonts cannot draw most non-Latin scripts.
  • The mark can be removed by someone with a PDF editor.
Privacy
Runs entirely in your browser: the PDF is never uploaded, and nothing is kept after you close the tab.

How to add a watermark to a PDF

  1. Open the PDF Drop the file onto the page. The current page renders as a live preview.
  2. Type the watermark Set the words, then the size, color and opacity. The preview updates as you change them.
  3. Place it Pick one of nine positions or the page diagonal, and set the angle and margin.
  4. Choose the pages Every page, or a range you type.
  5. Save The text is drawn onto the chosen pages and the document is handed back.

Watermark PDF: common questions

Can a watermark added here be removed again?

Yes, by someone who wants to. The text is drawn as a normal content object on the page, so a PDF editor can select and delete it. This is a visible mark of ownership rather than a security measure, and no browser tool can make it one.

Why can I not use certain characters?

The standard PDF fonts are WinAnsi-encoded and cannot draw most non-Latin text. Using a character outside that set would need a font file embedded in the document, so the tool tells you which character is the problem rather than writing a broken file.

Does the watermark change the text underneath?

No. It is drawn on top as a separate object, so the original content is untouched and still selectable. Nothing on the page is rasterized or re-encoded.