: It uses the LZMA and LZMA2 algorithms, which can provide 30–70% better compression than standard ZIP files.
If you are looking for general technical details often found in long explanatory posts about .7z archives: : It uses the LZMA and LZMA2 algorithms,
: Theoretically supports file sizes up to 16 exabytes . : It uses the LZMA and LZMA2 algorithms,