Normally, app icons are set by the developer, using the AppIcon.icns file in the app, in the bundle path Contents/Resources. You can also do this with individual documents, and with volumes, although custom volume icons can cause problems when they’re shared in Ventura, it appears. You can’t do this any longer with bundled apps, though, as Ventura breaks their signature if you try making a copy of them to a folder on a writeable volume. A couple of seconds later, the custom icon should appear correctly in the Finder window. Select that icon, and paste it into the original in the top left of the Get Info window. In some cases, you may need to open that PNG file using Preview to make this work, but you should be able to do this direct in the graphics editor once it’s in PNG format. Make the changes that you want to it, and save it as a PNG file with Alpha (transparency). Select the image at the top left of that dialog, copy it, and open the pasted image using your graphics editor.
Select the folder or icon you wish to customise, then Get Info on it. Here I’m using the new version 12 of GraphicConverter. To create a custom icon you’ll need a decent graphics editor capable of working with PNG files.
Folder icon changer mac how to#
This article explains how to do that, how it works, and goes on a brief archaeological dig into the history of Mac OS. Giving special folders their own icon makes them more distinctive than simply applying a tag to them. You might have more than one copy of an app, or two different versions which by default use identical icons. It’s sometimes valuable to be able to customise icons for folders and apps.
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