How to Fix Storage Full on Mac

What Causes This?

A Mac usually shows storage full when large files, old downloads, app leftovers, caches, and system data build up over time. Photos, videos, backups, and duplicate files are common space hogs, especially if you have a smaller SSD. In some cases, apps create temporary files that never get cleaned up, so free space keeps shrinking even if you are not saving much yourself.

Common Symptoms

• You see a “Your disk is almost full” warning
• Apps stop opening or crash unexpectedly
• macOS feels slow when saving, updating, or installing apps
• You cannot download files or move items to your Mac
• System updates fail because there is not enough free space

How to Fix It Manually

1. Check what is using your storage

   1. Click the Apple menu in the top-left corner.
   2. Go to System Settings > General > Storage.
   3. Wait for macOS to calculate usage, then review categories like Applications, Documents, Photos, System Data, and Trash.
   4. Start with the largest categories first.

2. Empty the Trash

   1. Right-click the Trash icon in the Dock.
   2. Click Empty Trash.
   3. If files are locked or in use, close related apps and try again.
   4. This is one of the fastest ways to recover space if you recently deleted large files.

3. Remove large files you no longer need

   1. Open Finder.
   2. Click File > New Smart Folder.
   3. Choose This Mac, then click the + button to filter by File Size.
   4. Look for large videos, ZIP files, installers, and old downloads.
   5. Delete what you do not need, then empty the Trash again.

4. Clean up the Downloads folder

   1. In Finder, open Downloads.
   2. Sort by Size or Date Modified.
   3. Remove old DMG files, duplicate downloads, installers, and unused documents.
   4. Many Macs lose gigabytes to forgotten files sitting here.

5. Uninstall apps you do not use

   1. Open Finder > Applications.
   2. Drag unused apps to the Trash.
   3. Keep in mind this may leave behind support files, caches, and settings in your Library folders.
   4. If an app includes its own uninstaller, use that instead.

6. Delete cache and temporary files

   1. In Finder, click Go > Go to Folder.
   2. Enter ~/Library/Caches and press Return.
   3. Review large cache folders and delete files from apps you recognize.
   4. Repeat with /Library/Caches if needed, but be careful not to remove anything you are unsure about.
   5. Restart your Mac after cleanup so macOS can rebuild needed cache files safely.

7. Use Apple’s built-in storage recommendations

   1. Go back to System Settings > General > Storage.
   2. Review options like Store in iCloud, Optimize Storage, and Empty Trash Automatically.
   3. Enable the ones that fit how you use your Mac.
   4. This helps prevent the problem from coming back.

Fix It Automatically with Kudu

If you do not want to hunt through folders manually, Kudu can scan your system for junk files, caches, temporary data, and leftover app files that waste storage space. It gives you a faster way to recover disk space without guessing what is safe to remove.

Download Kudu Free →