7-Zip is the most popular open-source file extractor or file archiver software. It works on Windows operating systems, as well as Linux via command line. It supports encryption and is completely free software which you can download, install, and use.
Supported formats for extract:
001 (002, etc.), 7Z, ARJ, BZ2, BZIP2, CAB, CHM, CHW, CPIO, CRAMFS, DEB, DMG, DOC, EXE, FAT, GZ, GZIP, HFS, HXS, ISO, LHA, LZH, LZMA, MBR, MSI, NTFS, PPT, QCOW2, RAR, RPM, SQUASHFS, SWM, TAR, TAZ, TBZ, TBZ2, TGZ, VDI, VDMK, VHD, WIM, XAR, XLS, XZ, Z01 (Z02, etc.), Z, ZIP, and ZIPX
7-Zip can compress files as:
7Z, BZIP2, GZIP, TAR, WIM, XZ, and ZIP
7-Zip is one of the easiest programs to use thanks to the simple user interface. It is extremely easy to create or extract archives with 7-Zip. Additionally, the program is fully integrated into Windows so you can extract or archive files by right clicking the file/s.
7Z Format comparison
For the testing purpose, I’ve been used the following files and folders:
- Word Documents: 60 (Total: 51,9 MB Uncompressed)
- PDF Documents: 15 (Total: 70,2 MB Uncompressed)
- JPG Images: 40 (Total: 72,2 MB Uncompressed)
In total, there are 115 files in three different folders, which totals 194 MB in space.
After the 7Z compression on Ultra settings, the size of the archive was Thirty-one percent smaller (134 MB). For the comparison, the same files on WinRAR’s Best quality settings, the archive was only 6% smaller.