Watermark PDF
Stamp a text watermark such as “Confidential” or “Draft” diagonally across every page of a PDF. Set the text and opacity, then download. Everything runs in your browser — your PDF is never uploaded.
How to watermark a PDF
- Add your PDF above — it's read straight into your browser and never uploaded.
- Type the watermark text, such as “Confidential” or “Draft”, and set the opacity to control how faint or bold it looks.
- Click Apply to stamp it diagonally across every page, then download the result.
About watermarking PDFs
A text watermark stamps a word or phrase like “Confidential”, “Draft” or “Sample” diagonally across every page of a PDF, marking its status so it isn't mistaken for a final or approved copy. You set the text and use the opacity slider to make the mark light enough to read through or bold enough to stand out.
The watermark is drawn across all pages in one step, so a whole document is marked consistently. Everything happens in your browser, so your PDF is never uploaded — it stays on your own device with no server, queue or sign-up involved.
The point of stamping the file itself is that the label travels. A note in your email saying this is a draft disappears the first time the attachment is forwarded, printed or saved to a shared drive — the watermark does not. That makes it worth marking review copies before circulation, proposals sent to prospects, and sample chapters or reports you publish for evaluation.
Treat a watermark as labelling, not protection. It signals status and discourages casual reuse, but a determined recipient can retype the content or crop a screenshot around the mark. If a document genuinely must not circulate, combine the watermark with real controls — password protection, restricted sharing, or sending only the pages people need. For everyday drafts and samples, a clear diagonal stamp is usually deterrent enough.
Frequently asked questions
How do I watermark a PDF?
Upload your PDF, type the watermark text, set the opacity, and click Apply to stamp it diagonally across every page, then download.
Can I change how faint it is?
Yes — the opacity slider controls how light or bold the watermark looks.
Does it watermark every page?
Yes, the text is drawn across all pages of the document.
Is my PDF uploaded?
No. The watermark is added entirely in your browser; nothing is sent to a server.
What opacity works best?
Match it to the document's job. If people still need to read every word — contracts under review, reports circulating for comments — keep the mark faint enough that the text stays easy to read through it. For samples and previews where deterring reuse is the goal, go bolder. Either way, check a dense, text-heavy page after applying: that is where a too-strong watermark hurts readability first.