First.7z Apr 2026

It can pack/unpack 7z, XZ, BZIP2, GZIP, TAR, ZIP, and WIM. It can also extract (but not create) dozens of others like RAR, ISO, DMG, and EXE.

Uses advanced algorithms to shrink files significantly, which is ideal for saving disk space or sending large email attachments. first.7z

The software is tiny, installs in seconds, and uses very little system memory. It can pack/unpack 7z, XZ, BZIP2, GZIP, TAR, ZIP, and WIM

The native .7z format typically yields a 30-70% better compression ratio than the standard ZIP format. It can pack/unpack 7z