Zip Command Line Qualifiers

/LEVEL=n



Specify the compression level:

0 = No Compression (store all files)

1 = Fast Compression
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8 = Best Compression, store non-compressibles
9 = Best Compression

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/LEVEL can be used to specify more or less than the “normal” compression.

/LEVEL=5 equates roughly to PKZip’s DeflateN.

/LEVEL=8 equates roughly to PKZip’s DeflateX. However, .ZIP files and other compressed files Zip recognizes will be stored in the archive without further attempts at compression.

/LEVEL=9 also equates roughly to PKZip’s DeflateX.