How to Assign Cmd+Shift+6 Hotkey

Even though Apple discontinued Touch Bar a few years ago, macOS reserves Cmd+Shift+6 for Touch Bar screenshot on all computers, making it impossible to use this key combo with Shottr. If your laptop does have a Touch Bar, you can disable key binding in the System Settings. Ironically, if you have a machine without a Touch Bar, the shortcut is still reserved and you can’t unbind it as easily.

You can disable it manually running these commands in Terminal:

/usr/libexec/PlistBuddy -c "Delete :AppleSymbolicHotKeys:181:enabled bool false" ~/Library/Preferences/com.apple.symbolichotkeys.plist;

/usr/libexec/PlistBuddy -c "Delete :AppleSymbolicHotKeys:182:enabled bool false" ~/Library/Preferences/com.apple.symbolichotkeys.plist;

/usr/libexec/PlistBuddy -c “Add :AppleSymbolicHotKeys:181:enabled bool false" ~/Library/Preferences/com.apple.symbolichotkeys.plist;

/usr/libexec/PlistBuddy -c “Add :AppleSymbolicHotKeys:182:enabled bool false" ~/Library/Preferences/com.apple.symbolichotkeys.plist;

Then reboot. That will disable the shortcuts 181 and 182, “Save a picture of the Touch Bar as a file” and “Copy picture of the Touch Bar to the clipboard” respectively, and you will be able to assign Cmd+Shift+6 to any action in Shottr.

Kudos to Matthew F. for discovering the solution.