Add a CONFIDENTIAL Watermark

Mark a document confidential across every page.

No login requiredFiles stay private

Drop files here, or click to browse

PDF no file size limit

Browse files

Your files never leave your device. All processing happens locally in your browser.

Stamp a text watermark (CONFIDENTIAL, DRAFT, your name…) across every page of a PDF. Runs entirely in your browser; the PDF is never uploaded.

confidential documents tips

🔒

A diagonal "CONFIDENTIAL" at ~20% opacity reads clearly without obscuring the text.

🎨

Red conveys sensitivity; gray is subtler for internal docs.

📄

The watermark is applied to all pages so no page can be shared "clean".

🔒

Sensitive files are watermarked in your browser — never uploaded.

Choose File

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

Process

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Download

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Completely free — no hidden costs, ever

✓No account, email, or login required

✓Files never leave your device

✓No file size limits whatsoever

✓No watermarks on any output

Add a DRAFT Watermark

Clearly mark a document as a draft before sharing

Watermark with Your Name or Brand

Stamp your name or company across a PDF you're sha

Mark a Document as a SAMPLE

Watermark preview or sample PDFs you distribute pu

Mark Documents INTERNAL ONLY

Flag internal documents so they aren't shared exte