Is 18PDF really free?

Yes. All 18 tools are free to use, with no signup, no file size limit, and no watermarks on output.

Are my files uploaded to a server?

No. Every operation runs entirely in your browser using WebAssembly. Your files never leave your device.

No. There is no signup, no login, and no tracking. Open the tool and start working immediately.

There are no artificial limits. The only constraint is the memory of your device, since processing happens locally.

Yes. Set Start at to any positive integer.

The current formats are 1, Page 1, 1 of N, and -1-. Custom text formatting is not yet supported.

Stamp page numbers in any position

Drop files or click to browse

Position

Format

Start at

Font size