How to use it
- Choose a PDF file and enter the watermark text.
- Adjust the text size and transparency.
- Select Add watermark and download the stamped PDF.
About this tool
Add a text watermark to PDF pages to label drafts, mark a document confidential, or identify a copy. The watermark is placed diagonally across each page.
Watermarking happens in your browser. The original file stays unchanged, and the watermarked PDF is saved as a separate download.
Questions
Can I add a Draft or Confidential watermark?
Yes. Enter any text, including Draft, Confidential, Sample, or your organization name.
Can I change watermark transparency?
Yes. Use the transparency control to make the watermark lighter or more visible.
Are my files uploaded to a server?
No. The tool runs entirely in your web browser using JavaScript. Your files are read and processed on your own device and are never sent to us or anyone else. You can even disconnect from the internet after the page loads and it will still work.