PDF watermark
Add a text watermark on every page of your PDF.
How to add a watermark to a PDF quickly and securely
Sharing a draft, a copy, or an internal file and want that to be obvious at a glance? One2PDF lets you add a watermark to a PDF online for free, with no software to install. Import the file, type the text, set opacity, then apply it across every page.
Marking a PDF does not have to hide the content. The preview shows the text diagonal or repeated: visible enough to label the file, light enough to read. It is a practical way to put CONFIDENTIAL on a PDF, protect a working copy, or visually stamp a pack.
Security stays at the center of the flow: the original is not kept, the watermarked PDF is available for download, then deleted. No account is required for occasional use. Add your watermark now, check the look, and come back to One2PDF whenever a document needs a clear mark. The whole process takes only a few seconds, with no extra software on your computer.
What this tool does
- Visible mark — Mark your PDFs as confidential, drafts or copies.
- Live preview — See the text on each page before you export.
- No installation — Add the watermark in the browser, then download.
- Adjustable opacity — Visible enough to mark the file, light enough to read it.
- Every page — The watermark is applied to the whole file at once.
- Temporary files — The original PDF is not kept on the server.