Lots of macOS icons haven’t yet been updated to fit the style of macOS Big Sur. Thankfully there’s macosicons.com, it’s an excellent place to browse and get Big Sur looking icons. However, there’s one small issue, macOS no longer lets you copy and paste new icons onto apps…
If you want to change the default app icons, you’re going to need to switch off System Integrity Protection (aka SPI), this was designed to keep your Mac safe from malicious software. It’s worth switching it off for some pretty icons, right?
If you’re cool with the risks, here’s what you need to do:
- Restart your Mac and hold down Command + R to reboot into Recovery Mode.
- After your Mac restarts in Recovery Mode, log into your Admin account.
- Click Utilities in the Menu bar and select Terminal from the drop-down menu.
- In the Terminal window, type “csrutil disable” and press Return
- Restart your Mac like normal…
You can now download new icons from macosicons.com and simply drag the .icns files onto the icon in the Get Info window for each app. Enjoy.