Ancestors

Written by John Gruber on 2025-01-17 at 23:20

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 @dmoren 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?

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Toot

Written by John Gruber on 2025-01-17 at 23:27

Also, a great tip in this post: drag a bunch of folders or files to Archive Utility and you'll get a bunch of compressed archives, instead of one single “Archive.zip" file like you do in the Finder.

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Descendants

Written by Eric Peacock on 2025-01-19 at 01:27

@gruber Archive Utility is a hidden gem — once one realizes it is a full-on app with customizable preferences.

As the article notes it can batch compress individual archives with a simple drag-and-drop of directory contents. It lives in my dock for that very purpose.

Though the default settings sort of make sense, most will want to hit up the prefs and make adjustments in addition to setting the default method to zip — especially when it comes to auto deletion of expanded archives.

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