A67zip -

In 7-Zip, the compression feature treats multiple files as a single continuous data stream, which often results in significantly higher compression ratios, especially when archiving many similar files. Key Benefits

This mode is most effective when your archive contains many files of the same type or with similar content, as it "consolidates" the redundancy. Important Trade-offs A67zip

To extract a single file from the middle of a solid block, 7-Zip must decode all the data preceding it in that block, which can make extracting individual files slower. In 7-Zip, the compression feature treats multiple files