Is zip version 20 supported ?

A free file archiver for extremely high compression

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Is zip version 20 supported ?

Forum: Open Discussion

Creator: kun she

Created: 2024-09-09

Updated: 2024-09-09

kun she - 2024-09-09

I need to compress some files into zip with version 20, is it supported by latest version?
I cannot find description about any command line parameters related in help contents.
If it is supported, can anyone give an example for this, thanks anyway.

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Igor Pavlov - 2024-09-09

version 20 is deflate.
it's default mode for 7-zip.
but 7-zip also adds NTFS extra for NTFS UTC Modified time.
But another zip will ignore that NTFS extra, if they don't support it.
You can disable NTFS extra with -mtp2 switch:

7z a -mtp2 a.zip *.txt

Also archive can contain UTF8 file name extra.
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