What metadata you are likely to encounter, where it is stored, and how you can view and edit it. A grand tour of the Finder’s Get Info dialog.
macOS
Adds keywords, author, copyright and other info to any file on your Mac. Runs in El Capitan, Sierra, and High Sierra.
Want to make local Spotlight searches more effective? Add keywords to their metadata, such as Finder Comments. But there are some snags.
Don’t use iCloud Drive to copy docs between Sierra and High Sierra, as they may well lose metadata in the process. Bug or feature?
Browse, cut/copy/paste, edit content, export as text, and more for any xattr attached to a folder or file in HFS+ and APFS, Sierra and High Sierra.
How to attach a metadata flag to a file or folder, to bring it under the protection of SIP.
Can now edit the content of existing xattrs, and create completely new ones, with arbitrary content.
Tweaked to see and open any file or folder, even inside bundles, and to fix a display glitch with binary property lists.
Now supports cut, copy and paste of any xattr between files or folders. Also adds quarantine flags, and reveals full content of most xattrs.
Found in some supplementary log files in Sierra only, and contain a UUID which may refer to main log files.
The Eclectic Light Company 