Xcode Junk Documentation Cache
This Xcode folder stores downloaded documentation and indexing data used to browse Apple developer docs inside Xcode.
What is Xcode Junk Documentation Cache?
DocumentationCache is a folder under your user Library that Xcode uses for cached developer documentation content and related lookup data. People usually encounter it when reviewing disk usage in ~/Library/Developer/Xcode or troubleshooting Xcode storage growth. Its contents help Xcode load documentation resources more quickly, especially for developer reference browsing and related tooling.
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Safety overview
Status: Mostly safe
This is generally cached documentation data rather than personal files or project source code. Removing it is usually low risk, but Xcode may need to re-download or rebuild documentation-related data afterward, and some documentation views may be slower until the cache is recreated.
Recommendation: Keep it if you actively use Xcode and want faster access to documentation content. If you need to recover disk space and Xcode is closed, this folder is usually optional to remove because it can typically be recreated by Xcode when needed.
File path
~/Library/Developer/Xcode/DocumentationCache
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