How do I delete fonts from font book in Sonoma

Font Book is the only way to remove some of these foreign language fonts.

The Noto Sans fonts cannot be touched, so forget about those.

Disabling certain fonts in Sonoma: There are 228 fonts (as 67 families) in the /System/Library/AssetsV2/com_apple_MobileAsset_Font7/ folder. Whether or not you have them seems to be related to a hardware difference. These fonts were present on my M2 Pro mini, but not our older 2018 Intel mini, even though they’re running the same version of Sonoma, and both had Sonoma installed from scratch on an erased volume.

Open Font Book (it's the only way to view these fonts). Click All Fonts at the top left. The rest is easier if you put the fonts into list view. As I never use Font Book for font management, all fonts listed belonged to the OS. Then I just started at the top and right clicked on anything with bold (enabled) text to see if it would let me choose Deactivate. You can turn off a lot of mostly Asian fonts this way.

When done, the folder was then empty, and 1.08 GB of space was reclaimed. So, the OS didn't just disable the fonts, but deleted them from the System folder (it's good to be the OS and do things the user can't). Everything I disabled now says Download in Font Book when I right click on them.

Remove, deactivate, or activate fonts in Font Book on Mac - Apple Support

My apologies. Yes, that one appears to be a system font. System fonts, fonts installed by Apple, cannot be deleted or deactivated.

You can only delete fonts that you have installed. Those that are installed with the Mac's operating system cannot be deleted.

YMW wrote:

I have tried the suggested method to click on them in the font book and delete, which does not seem to work.

Fonts that you added ...?

or baked in system fonts?

As I said, you can only delete those additional fonts you have installed. Everything else stays.

Also there are many foreign fonts, which I will never use, can I delete them or turn them off?

Your apps should be “turning them off. “ if they are not, contact the developer and ask them to correctly manage their font menus.

Almost all TrueType fonts are compatible with Sonoma. That's what nearly all of the included OS fonts are. Either single face .ttf fonts, or .ttc TrueType font packages that contain more than one typeface. Even ancient 8 bit TrueType fonts from Windows 3.1 work. The ones that don't work will anymore are Apple's legacy TrueType fonts from OS 9 and earlier.

Sonoma absolutely is compatible with OpenType fonts. That's where the entire font industry is going. They're trying to ditch everything else.

Though when you say OpenType, do you mean ancient Type 1 PostScript fonts?

With all due respect, you can do this yourself. Simply work through your lest and delete those which can be deleted.