Unverified60% confidenceFactExact time
The macOS file tagging system was introduced in Mavericks, implemented at the underlying level based on extended file attributes (xattr), with tag information stored as com.apple.metadata:_kMDItemUserTags key-value pairs.
2
Sources
60%
Confidence
Long-term
Relevance
9/5/2026
First Seen
Sources
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