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2025-01-17 23:20:41 UTC

John Gruber on Nostr: So the Finder’s Compress command (File menu or contextual menu) creates Zip ...

So the Finder’s Compress command (File menu or contextual menu) creates Zip archives (.zip), but the Archive Utility app defaults to creating compressed archives in .cpgz format. That’s a thing I learned from this story:

https://sixcolors.com/link/2025/01/compress-folders-into-separate-archives/

Why the Finder uses good old .zip is obvious: it’s universal.

But why in the world does Archive Utility default to this bizarre .cpgz GNU archive format? It’s not like compression is better (if at all). Anyone know? Or have a good guess?