Add a Text Watermark to a PDF, Free
Mark drafts or show ownership with diagonal text on every page
🔒 No upload • No account • No watermark • Runs in your browser
Add watermark stamps diagonal text across every page of a PDF. It is commonly used for DRAFT, CONFIDENTIAL or a company name.
How to use Add watermark
- Select your PDF.
- Type the watermark text.
- Press Add watermark.
- Download the marked PDF.
Features
- Diagonal text on all pages.
- Your original is not changed.
- Processed locally.
- No FirePDF branding is added.
Good to know
- A watermark is a visual mark. It does not stop someone from copying content from the file. Add a password with Protect PDF if access matters.
Questions and answers
Can I use my logo?
The tool adds text watermarks only.
Can I remove a watermark later?
Only from your original. Remove text watermark works on simple repeating text, on a best-effort basis.
Will the watermark be readable?
It is drawn diagonally across the page so it stays visible without hiding the content.
Privacy
This tool runs inside your browser. Your file is read into your device’s memory, processed there and handed back as a download. It is not sent to a FirePDF server. You can test this by switching off your internet connection after the page has loaded and running the tool again. Read the Privacy Policy and the Security page for details.