Add a watermark to a PDF
Stamp a text watermark such as CONFIDENTIAL or DRAFT across every page, centred or tiled, with your colour, size, angle and opacity. Free and private.
- Files never leave your device
- Free, no sign-up
- No watermark
About Watermark PDF
Mark a PDF as confidential, draft, sample or copy before you share it. Type your watermark text, choose its colour, size, angle and opacity, and place it once in the centre of each page or tile it across the whole page for documents that should be hard to reuse. The watermark is added in your browser, so the file is never uploaded.
How to use Watermark PDF
- 1
Drop the PDF you want to watermark.
- 2
Type the watermark text, for example CONFIDENTIAL or DRAFT.
- 3
Adjust colour, font size, angle and opacity, and choose centred or tiled layout.
- 4
Click Watermark and download the stamped PDF.
Why use this tool
- Centred or tiled layouts for light or heavy protection.
- Full control over colour, size, rotation angle and transparency.
- Applies to every page in one step.
- Text and images underneath stay readable at low opacity.
- Private, free and fast.
Frequently asked questions
A determined person with editing software can remove most watermarks. Tiled watermarks are much harder to clean up. Combine with Flatten PDF or Protect PDF for stronger protection.
Around 20–30% is visible without making the document hard to read.
This tool adds text watermarks. For logos, use Edit PDF to place an image on the pages.
Yes. It is part of the page content, so it prints exactly as it appears on screen.
No. The watermark is applied locally in your browser.
Yes. It runs in any modern browser on Android and iOS as well as on Windows, macOS and Linux, with nothing to install.
Yes. There is no account, no watermark and no usage limit. The tool runs in your own browser, so there is no server cost to charge you for.
Merge them first with Merge PDF, watermark the combined file, then split it again if you need separate documents.
Related tools
All PDF tools →- Protect PDFAdd a password to a PDF and encrypt it so only people with the password can open it.
- PDF Header & FooterAdd custom headers, footers and Bates-style sequential numbers to every PDF page, with page, total and date tokens.
- Flatten PDFFlatten PDF form fields, signatures and annotations into the page so they cannot be edited again.
- Merge PDFCombine multiple PDF files into one document in seconds.
- Split PDFSplit a PDF into single pages, custom page ranges, every N pages or files under a size limit.
- Compress PDFReduce PDF file size by re-encoding page images at the quality you choose, or strip metadata losslessly.