Add a PDF Watermark
Stamp text over every page with adjustable size, position and opacity.PDF & DocumentsAdd PDF Watermark
Stamp text over every page. The watermark is drawn as real text with adjustable opacity; tiling repeats it across the page.
About this tool
Mark drafts as confidential, stamp ownership onto reports, or tile DRAFT across a contract. The watermark is drawn as real PDF text with adjustable opacity, so it stays crisp at any zoom level.
How to use the Add PDF Watermark tool
- Choose a PDF. Select the document to stamp.
- Write the watermark text. Enter the text, then set the position, font size and opacity. Enable tiling to repeat it across each page.
- Stamp and download. Click Add watermark to apply it to every page.
Supported formats
Input
- A single PDF file (.pdf)
Output
- The PDF with the text watermark on every page
Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.
Frequently asked questions
Is the watermark drawn under or over the content?
Over. It is drawn as a transparent text layer above the existing page content.
Can I use an image watermark?
No. This tool stamps text only.
Will the watermark appear in text extraction?
Yes. It is real text, so copy and search operations will find it.
Can the recipient remove the watermark?
A determined user can edit a PDF. Watermarking communicates status; it is not strong protection.
Privacy
Everything you enter stays in this browser tab. There is no upload endpoint for tool inputs, no account, and no server-side copy of your text or files. Results are produced locally and disappear when you close the page.
No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.
Known limitations
- Text is drawn in Helvetica, so some non-Latin scripts will not render.
- Text watermarks only; image watermarks are not supported.
- The watermark sits above existing content and may cover fine detail at high opacity.
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Other free tools from the same collection.