Supported formats

• 7z
• ZIP
• GZIP
• TAR
• BZIP2
• RAR (only browsing and decompression)
• CAB (only browsing and decompression)
• ARJ (only browsing and decompression)
• Z (only browsing and decompression)
• CPIO (only browsing and decompression)
• RPM (only browsing and decompression)
• DEB (only browsing and decompression)
• LZH (only browsing and decompression)
• SPLIT (only browsing and decompression)
• CHM (only browsing and decompression)
• ISO (only browsing and decompression)

ZIP

7-Zip creates fully ZIP compatible archives. It means that everyone can decompress these files by any ZIP compatible decompression utility. During compression 7-Zip can use one of the following ZIP compression methods:

• 0 - Store
• 8 - Deflate
• 9 - Deflate64
• 12 - BZip2

The current version of the 7-Zip can extract any files from ZIP archive that were compressed with one of the following methods:

• 0 - Store
• 1 - Shrink
• 6 - Implode
• 8 - Deflate
• 9 - Deflate64
• 12 - BZip2

Files compressed with other ZIP compression methods can't be extracted by the current version of the 7-Zip. But these supported methods are the most popular today, and therefore 7-Zip can decompress most ZIP archives. Forextracting files compressed with non-supported methods you must use some other ZIP utility.

7-Zip supports Zip64 extension of ZIP format.

The current version of 7-Zip doesn't support Zip multivolume archives.

LZH

7-Zip supports LZH archives only for listing, browsing and decompressing. 7-Zip supports -lh0-, -lh4-, -lh5-,-lh6- and -lh7- methods.