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Watermark PDF guide

How to adjust PDF watermark opacity, position, and rotation

Balance watermark visibility with document readability by previewing size, colour, angle, location, and transparency.

Updated September 2026 · PDFKaka EditorialOpen Watermark PDF
Capture the Watermark PDF workspace at 1366×768 with synthetic sample content and the controls used by this workflow visible.

Add the text watermark

  1. Choose the PDF and enter the visible watermark text.
  2. Check the watermark against both the lightest and darkest page areas.
  3. Set size, colour, opacity, rotation, and page position.

The same text-watermark settings apply across the document

Text watermark only, applied with the same settings to every page; no image/logo watermark and no per-page scope control.

FAQ

Can I apply a different watermark to only one page?

The current Watermark PDF workflow applies the same text-watermark settings across the document; it does not provide per-page scope controls.

What is the current input limit for Watermark PDF?

PDF; One PDF ≤50 MiB, ≤500 pages.

What does Watermark PDF create?

Adds visible text marks to the PDF pages; source pages are not rasterized by default. One PDF ≤150 MiB with visible text marks.

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