I have a ZIP file (created by Info-ZIP on Linux) and I want to make it as small as possible. I have lots of CPU time to burn on the recompression. I already know advzip, and it managed to reduce the size of my ZIP file by 5%. Is there another tool I should try? I would prefer free tools.
migrated from stackoverflow.com Jun 23 '11 at 0:52
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7zr is a light version, which should only deal with 7z format. (according to man pages, like this , I'm not with 7zr now to test it)
Try using the 7z instead of 7zr and see if it works.
I use this batch script on the folder I want to archive:
Now choose which file is smaller - !archive.zip or !archive2.zip. In some rare situations the mixing of resulted arhives might give a smaller file (few bytes).
Also the final compressed optimised kzip archive might be mixed (use zipmix) with a 7zip archive (after deflopt+advzip+deflopt). Settings for 7zip I use: