About SysFenix

Free tools that respect your files.

SysFenix is a suite of file tools built on a simple idea: your files should never have to leave your device just to be converted, merged or compressed. Modern browsers are powerful enough to do the work themselves — so that's exactly what our tools do, using WebAssembly builds of trusted open-source software like FFmpeg and pdf-lib.

No uploads means no waiting for transfers, no file size caps, no "premium" paywalls to unlock your own documents, and no privacy questions. The site is funded by unobtrusive advertising, which keeps every tool free for everyone.