Quicklook broken

I just see the raw file text.

macOS 12.7.5 (21H1222)
GA 3.4 (3413)

What is the file type (.glyphs, .glif, …)?

Perhaps QuickLook was disabled in System Settings → General → Extensions → Overview → Glyphs.

Otherwise, this might be fixable with a reboot (which clears the QuickLook cache on the Mac).

They’re .glyphs files.

Glyphs App doesn’t appear under the Quick Look extension in my settings or under Added Extensions.

I restarted and it still has the same problem

can you run this in the terminal and look for the line that starts with com.schriftgestaltung.glyphs and post it here?

qlmanage -m plugins

It’s not there

Try running the following in the terminal and see what it reports:

pluginkit -m | grep com.GeorgSeifert.Glyphs3

The response should look similar to this:

     com.GeorgSeifert.Glyphs3.GlyphsWoffQuickLookExtension(3.4)
+    com.GeorgSeifert.Glyphs3.GlyphsThumbnailExtension(3.4)
+    com.GeorgSeifert.Glyphs3.GlyphsQuickLookExtension(3.4)
     com.GeorgSeifert.Glyphs3.GlyphsWoffThumbnailExtension(3.4)
+    com.GeorgSeifert.Glyphs3.GlyphsUFOQuickLookExtension(3.4)
+    com.GeorgSeifert.Glyphs3.GlyphsUFOThumbnailExtension(3.4)

Yep:

 com.GeorgSeifert.Glyphs3.GlyphsThumbnailExtension(3.4)
 com.GeorgSeifert.Glyphs3.UFOThumbnailExtension(3.4)
 com.GeorgSeifert.Glyphs3.GlyphsWoffQuickLookExtension(3.4)
 com.GeorgSeifert.Glyphs3.GlyphsQuickLookExtension(3.4)
 com.GeorgSeifert.Glyphs3.GlyphsWoffThumbnailExtension(3.4)
 com.GeorgSeifert.Glyphs3.GlyphsUFOQuickLookExtension(3.4)

It’s randomly working again anyway

Something is wrong with the display of corner components in quicklook:

These glyphs actuall all have serifs.