If you work with Mac or Linux, you could use a.tar format instead. 7z is the least supported — it’s not integrated into any operating system, so you’ll have to install an application to open.7z archives. But, if you want the best compression ratio possible, 7z is the way to go. All compression benchmarks are rough. Some may already be familiar with 7-Zip as an archive utility tool but it offers much more than that. 7-Zip compresses files to reduce storage space and increase transmission speed.
Free 7Z RAR TAR ZIP ZIPX opener for Windows 64 bit
Best Free Windows Archive Utility
PeaZip is a free file archiving application (file compression, rar opener,...), cross-platform Open Source free alternative to WinRar, WinZip and similar software for Windows & Linux.
Best Windows Archive Utility
Compress / archiving to 7Z, ARC, Brotli BR, BZip2, GZip, PAQ, PEA, RAR, self-extracting archives, TAR, WIM, XZ, Zstandard ZST, ZIP file format.
Best Archive Utility Software
*Open ACE(*), BR, CAB, DMG, ISO, RAR, UDF, ZST, ZIPX archives, 200+ file formats supported for decompression.
Extract, create and convert archive files, raw file split / join, create spanned (multi-volume) archives, supports strong encryption, encrypted password manager, secure data delete (unrecoverable, permanent erasure), find duplicate files, compute hash and multiple checksum algorithms, export scripts to automate backup and restore tasks.