Mark a PDF as CONFIDENTIAL
Stamp “CONFIDENTIAL” diagonally on every page before sharing the document.
- No sign-up
- Free, no watermark
- Nothing leaves your device
Sent to servers: 0 BNothing left your device
About this tool
Before sending a contract under negotiation, a medical record or a proposal, a visible mark makes clear what it is and stops it circulating as final.
Uploading a document to a server to mark it confidential is ironic. Here the mark is applied in your browser and the file never leaves your computer.
How it works
- 01
Drop the PDF.
- 02
Pick CONFIDENTIAL or type your own text.
- 03
Adjust the strength and download.
Questions
Does a watermark protect the document?
No. It is a visible label; a PDF editor can remove it. To protect the content, don't share it or anonymize it.
Does it cover the text?
At the default strength the text stays perfectly readable.