Convert TAR.GZ to 7Z
Repack a TAR.GZ into 7Z for tighter compression than gzip can manage.
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TAR.GZ
A gzip-compressed TAR archive — the classic way software and backups are packaged on Linux and Unix systems.
7Z
The 7-Zip archive format, known for strong compression that often beats ZIP. Best opened with 7-Zip or a compatible app.