Stamp a custom text watermark on every page of your PDF. 100% browser-based.
A PDF watermark tool is a free online service that stamps a custom text watermark on every page of a PDF document. Add 'CONFIDENTIAL', 'DRAFT', 'COPY', your company name or any custom text — controlling the font, size, colour, angle and opacity.
Stamp CONFIDENTIAL on sensitive documents shared for review to discourage unauthorised distribution.
Mark documents as DRAFT to indicate they are not final versions and should not be used as official documents.
Add your company or brand name as a watermark to proprietary documents to assert ownership.
Stamp SAMPLE across proposal documents, portfolios and presentations sent to prospective clients.
Yes — the opacity slider controls transparency. 20–40% opacity is typically used for background watermarks that are visible but do not obscure content.
Removing watermarks from a PDF is difficult and often impossible without the original source file. Watermarks applied as a flat image layer are particularly hard to remove.
This tool adds text watermarks. For image watermarks (logos), you would need a PDF editing application such as Adobe Acrobat.
Yes — the watermark is applied consistently to every page of the document.