🔒 Files never leave your device

Every tool you need to
work with PDFs

Merge, split, compress, convert, rotate, watermark, protect and unlock PDFs — free, unlimited, and 100% private. Everything happens right in your browser: nothing is ever uploaded.

✓ No uploads — works offline ✓ No sign-up ✓ No file limits ✓ Free forever
📄

Drop files here

or

Choose files

Stamp a watermark across every page

Mark documents as CONFIDENTIAL, DRAFT, or with your firm’s name before sharing. Control the text, colour, opacity, size and diagonal layout. Unlike most online PDF sites, PDF WithMe never uploads your file anywhere — all processing happens inside your own browser, and it even works with your internet switched off.

How to use it

  1. Drop your PDF into the box above.
  2. Type the watermark text and adjust colour, opacity, size and layout.
  3. Click Add watermark and download the stamped PDF.

Frequently asked questions

Can the watermark be subtle?

Yes — set opacity as low as 5% for a barely-there stamp that still deters casual copying.

Can I use my company name?

Yes — any text works, in any colour. Many users stamp the recipient’s name to trace leaks.

Does watermarking protect the file?

A watermark is a visual deterrent. For real protection, also use our Protect PDF tool to add password encryption.