How to Remove System Cache on Mac

What Causes This?

System cache on a Mac builds up as macOS and your apps store temporary files to speed up loading, updates, and everyday tasks. Over time, these files can become outdated, corrupted, or simply take up far more space than they should. Large app updates, browser activity, and long periods without cleanup often make the problem worse.

Common Symptoms

• Your Mac shows low storage space even after deleting files
• Apps feel slow to open or behave oddly
• macOS runs sluggishly or freezes more often
• You see large amounts of “System Data” or similar storage usage
• Temporary files keep growing without a clear reason

How to Fix It Manually

1. Check how much storage system files are using

   1. Click the Apple menu > System Settings.
   2. Go to General > Storage.
   3. Wait for macOS to calculate storage usage and look for large categories such as System Data, app data, or cached files.

2. Clear user cache files from Finder

   1. Open Finder.
   2. In the top menu, click Go > Go to Folder.
   3. Type ~/Library/Caches and press Return.
   4. Open the folders inside and move unnecessary cache contents to the Trash.
   5. Do not delete the cache folders themselves unless you know exactly what they belong to.
   6. Focus on large caches from browsers, Adobe apps, Spotify, Slack, and other apps you use often.

3. Remove system-level cache files carefully

   1. In Finder, click Go > Go to Folder again.
   2. Type /Library/Caches and press Return.
   3. Review the folders and delete only obvious temporary cache files from apps you recognize.
   4. If macOS asks for permission, enter your administrator password.
   5. Avoid deleting files if you are unsure what they do, since some system components may recreate them incorrectly or require a restart.

4. Clear browser cache

   1. In Safari, click Safari > Settings > Advanced and enable Show Develop menu in menu bar.
   2. Then click Develop > Empty Caches.
   3. In Chrome, press Command+Shift+Delete, choose Cached images and files, then click Delete data.
   4. Browser cache can take up several GB, especially if you stream a lot of media.

5. Restart your Mac

   1. Click the Apple menu > Restart.
   2. A restart clears some temporary system cache automatically and helps macOS rebuild only the files it still needs.

6. Empty the Trash

   1. Right-click the Trash in the Dock.
   2. Select Empty Trash.
   3. Until you do this, deleted cache files may still be taking up storage space.

7. Update macOS and problem apps

   1. Open System Settings > General > Software Update.
   2. Install any available updates.
   3. Then open the App Store and update your apps.
   4. Corrupted or oversized cache files are sometimes caused by buggy older versions.

Fix It Automatically with Kudu

If you do not want to dig through Library folders manually, Kudu can scan your system for unnecessary cache files, temporary junk, and other space-wasting data automatically. It helps you clean up safely without guessing which files are okay to remove, making it much faster to reclaim storage and improve performance.

Download Kudu Free →