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Re: Snapshot 20051211 overview [message #416 is a reply to message #400]

Wed, 14 December 2005 14:37

mr_ped
Messages: 826
Registered: November 2005
Location: Czech Republic - Praha

Experienced Contributor

7zip is not compatible with pkzip (Winzip) format, yet it *can* produce also classic zip (winzip) archives still gaining a small advantage (2% to 10%) in compression ratio when compared to winzip.

But it really shines when its own 7z compression is used, the gain with classic zip is marginal. (OTOH sometimes even 2% can make a difference)
With 7z compression it can go far far better than zip.
"Usually 7-Zip compresses to 7z format 30-70% better than to zip format."

Also I think the snapshot is mostly used by experienced developers, which are capable to download/install/use new compression tool, so no real pressure to maintain classic zip. And also there's no real problem (IMHO) to post both 7z and zip archives?

7z is available in source, win32 or linux executables (not very good support of different platforms for ordinary user, who doesn't want to compile sources).

And lately it is used by some install packages, as it's compression ratio is top class right now.

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