About
Key Codes is a little utility that displays the key code, unicode value, and modifier keys state for any key combination you press. If you're a developer, it might be useful to you.
Version 2.2.3 requires macOS 10.13 High Sierra or newer. It is available to download for free from the Many Tricks website and on the Mac App Store. The release notes are also available.
Older versions of Key Codes can also be downloaded from the Many Tricks website.
What's new
All release notes2.2.3Nov 13, 2025
Homebrew cask key-codes 2.2.3 (sha256 1228476da2fe3ad32fed885405c6b96dcdcdc3eea5dd77caf2337149b4895b87).