Clearing cache is one of the fastest ways to reclaim space on macOS—especially when “System Data” grows.

This guide covers the safe approach.

What is cache on macOS?

Cache is temporary data created by:

Browsers (images, scripts, website data)
Apps (thumbnails, temporary downloads, indexes)
System services (logs and temporary files)

Cache usually improves speed, but it can grow too large or become corrupted.

Clear browser cache (step-by-step for popular browsers)

Safari

Open Safari → Safari menu → Settings (or Preferences).
Go to Privacy tab → Manage Website Data.
Click Remove All to clear stored cookies, cache, and data.
Alternatively, search for specific sites to remove.

Safari cache often grows from web apps and extensions. Clearing it can fix slow loading sites.

Chrome

Open Chrome → Click the three dots (⋮) → Settings.
Navigate to Privacy and security → Cookies and other site data.
Click See all site data and permissions to review, or use Clear browsing data.
Select Cached images and files and Cookies and other site data → Clear data.

Chrome's cache can reach GBs if you use many tabs or extensions.

Firefox

Open Firefox → Click the menu button (☰) → Settings.
Go to Privacy & Security → Cookies and Site Data.
Click Manage Data to clear specific sites, or Clear Data to remove everything.

Firefox is lighter on cache, but clearing helps with performance.

Opera

Open Opera → Click the Opera menu (red 'O') → Settings.
Navigate to Privacy & Security → Clear browsing data.
Choose Cached images and files and set time range → Clear data.

Opera shares Chromium underpinnings with Chrome, so cache behavior is similar.

Brave

Open Brave → Click the menu (three lines) → Settings.
Go to Privacy and security → Clear browsing data.
Select Cached images and files → Clear data.

Brave's cache can include Tor-related temporary files if using private tabs.

Vivaldi

Open Vivaldi → Click the Vivaldi menu → Tools → Clear Private Data.
Check Cached images and files → Clear private data.

Vivaldi's unique UI might have cache spread across multiple profiles.

Arc

Open Arc → Click your profile picture → Settings.
Go to Privacy → Clear browsing data.
Select Cached images and files → Clear data.

Arc's vertical tabs and spaces can accumulate unique cache patterns.

For all browsers, consider using incognito/private modes for temporary browsing without cache accumulation.

Clear system cache and logs

Beyond browser cache, macOS stores system caches in:

~/Library/Caches (user caches)
/Library/Caches (system caches)
/var/log (logs)

These can be safe to clear but may slow apps temporarily. For example:

Deleting ~/Library/Caches/com.apple.Safari forces Safari to rebuild its cache.
Clearing ~/Library/Logs removes old error logs.

Be cautious: Don't delete everything—only clear folders you recognize.

Clear app-specific cache

Many apps cache data for speed:

Spotify: Deletes cached music—clear via app settings.
Mail: Removes attachment caches—use ~/Library/Mail.
Photos: Clears thumbnail caches—rebuilds automatically.

For apps like Adobe Creative Cloud, cache can grow to 10+ GB.

Troubleshooting Cache Issues

If clearing cache doesn't solve problems:

Cache not clearing?

Force quit the browser/app first
Check if you're in the right profile (browsers like Chrome have multiple)
Use incognito mode to test if cache is the issue

Apps still slow after clearing?

Cache might not be the problem—check Activity Monitor for CPU/memory hogs
Rebuild system caches by restarting your Mac
Update the app, as bugs might cause performance issues

Browser cache keeps growing?

Disable "preload pages" in browser settings
Use extensions that limit cache size
Clear cache more frequently or use private browsing

System cache clearing causes issues?

Don't clear all caches at once—do it selectively
Some caches are needed for system stability
Restore from backup if problems persist

Can't find cache folders?

Use Finder's Go to Folder (Cmd+Shift+G) with paths
Enable hidden file viewing with Cmd+Shift+.
Use Terminal: find ~/Library/Caches -name "*cache*" -type d

When should you clear cache?

Apps feel slow or crash.
Storage is low (cache often contributes to "System Data").
You notice bugs after updates.
Websites show old content or login issues.
After malware concerns (though cache is usually safe).

Don't clear cache daily—apps need it for performance.

FAQ

Will clearing cache delete my data?
No, cache is temporary. Your documents, photos, and files stay safe.

How often should I clear cache?
Every few months, or when you notice issues. Don't overdo it.

Does MacRevive clear cache automatically?
Yes, MacRevive identifies and removes safe caches without manual hunting.

What's the difference between cache and cookies?
Cache stores page elements for speed; cookies remember login info and preferences.

Can clearing cache help with malware?
Possibly, but use dedicated antivirus tools. Cache clearing is more for performance.

Why does cache keep coming back?
It's normal—apps create cache as you use them. Regular maintenance is key.

Is there a keyboard shortcut to clear cache?
Not built-in, but you can create Automator services for quick access.

Does clearing cache free up a lot of space?
It varies—browsers can free 1-5GB, system caches more. Results depend on usage.

For more on storage cleanup, check our guides on freeing up Mac space safely, reducing System Data, and cleaning up Xcode's Derived Data.

Use MacRevive to clear cache safely

MacRevive helps you:

Find and remove caches/logs without risks
Reclaim space from multiple sources
Keep your Mac running smoothly

Download MacRevive and automate cache cleanup.

How to Clear Cache on Mac (Chrome, Safari, and System Cache)