When I pack my project with 7zip, it has 7MB. When I pack it with JSZip the file has 17MB.
Now I need JSZip to perform some subtle changes which 7zip does not allow (at least not for zip anyway). However, after the file is archived, I'd rather have 7zip open it and pack it better. How to do that?
What I'm after is zip to zip archive conversion, just with better compression.