Add Watermark to PDF Free Online
Stamp a custom text watermark on every page of your document. Customize opacity, size, rotation, position, and color.
Select or Drag a PDF File
Add a DRAFT, CONFIDENTIAL, or custom text watermark on every page.
How It Works & Privacy
This tool operates 100% locally in your browser using pdf-lib. No data is ever uploaded to any server.
How to Add a Watermark to a PDF Online for Free
Upload your PDF, type your watermark text, customize the appearance, and click "Add Watermark". The text is stamped diagonally across every page and the watermarked PDF is downloaded immediately.
Frequently Asked Questions
Can I add an image watermark instead of text?
Currently our tool supports text watermarks only. Image watermarks require embedding external assets and are planned for a future update.
Can the watermark be removed later?
The watermark is embedded directly into the PDF page content. While it is not easily removable by end users, a skilled professional with advanced PDF editing tools might be able to remove it.