Watermark PDF
Preview on the left updates as you edit. What you see is what gets saved.
branding_watermark
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Max 100 MB · private browser processing
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tune Customize watermark
Preview updates live. Apply embeds the same look into every page.
Watermark saved
Your customized watermark is in the downloaded file.
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How to watermark a PDF
Add diagonal or straight text watermarks on every page for drafts, confidential labels, or branding.
How it works
- 1Upload your PDF.
- 2Enter watermark text and adjust size, opacity, angle, and color.
- 3Apply the watermark to all pages.
- 4Download the stamped PDF.
Frequently asked questions
Can I use an image logo?
This version supports text watermarks. Image stamps are planned next.
Will it cover content?
Yes by design. Lower opacity keeps content readable underneath.
Private?
Yes. Stamping runs locally with pdf-lib.
Can I watermark one page only?
Currently all pages. Use Split/Organize if you need a single-page file first.