Mac Cache Cleaning: Full Hub (All Cache Types)
What Are Caches on Mac?
Caches are temporary files that speed up repeated operations. Your Mac maintains several cache types across different locations. Together, they can consume 5-20GB of storage.
All caches are safe to delete — they rebuild automatically when needed.
User App Caches
Location: ~/Library/Caches. Each app creates its own cache folder here. Browser caches, Slack data, Spotify offline files, and more. This is usually the largest cache location (2-10GB).
To clean: Open ~/Library/Caches in Finder, select all folders, move to Trash.
Reclaim Mac finds and removes junk files automatically.
System Caches
Location: /Library/Caches. System-level caches shared across users. Includes font caches, software update data, and shared app caches. Requires admin password to clean.
Browser Caches
Safari: Settings > Privacy > Manage Website Data. Chrome: Settings > Privacy > Clear Browsing Data. Firefox: Settings > Privacy > Clear Data. Each browser maintains 500MB-2GB of cached web content.
DNS Cache
The DNS cache stores domain name lookups. Clearing it fixes some network issues. Terminal: sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder.
Developer Caches
Xcode DerivedData: ~/Library/Developer/Xcode/DerivedData (10-50GB). npm cache: ~/.npm. CocoaPods: ~/Library/Caches/CocoaPods. These are the largest caches on developer machines.
How to Clean All Caches at Once
Manual: visit each location individually. Automated: Reclaim Mac scans all cache locations in one pass and lets you clean everything with one click. Free and works offline — the easiest way to handle all cache types.
Clean your Mac in 60 seconds
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