Clearing the cache on your Mac is one of the simplest ways to fix a misbehaving website, free up storage, and give a sluggish app a fresh start. It is not a cure-all, and it is not risk-free if you delete the wrong files, but done carefully, in the right order, it is a safe, useful skill.
This guide explains how to clear cache on Mac safely, starting with your browser, then moving to system and app cache, with warnings about what not to delete.
What Is Cache On A Mac?
A cache is a collection of temporary files that your Mac, your apps, and your browser save so they can load faster next time. Your browser saves images and website files, apps save data they use often, and macOS saves system files that help it run smoothly.
Problems usually appear only when cached files grow very large, become outdated, or get corrupted. Then a website may show old content, an app may crash, or storage may fill up with files you no longer need.
What Clearing Cache Will And Will Not Do
Clearing your browser cache removes stored website files, and if you also remove cookies and website data, you will be signed out of websites. It can fix a site that shows outdated content or fails to load correctly.
Clearing cache does not delete your documents, photos, or personal files. It does not delete your bookmarks or passwords, unless you also choose to clear cookies and site data. It does not make an old Mac new again, though it can help when a bloated or corrupted cache was the problem.
Before You Start: Back Up First
Before touching system or app cache folders, make sure your backup is current. If you already use Time Machine, check that a recent backup completed. If you do not have a backup, set one up before deleting files from system folders, so you can restore if something goes wrong.
How To Clear Cache In Safari On Mac
Safari is the built-in browser on every Mac, so start here if websites misbehave in Safari. Apple’s own guidance for Safari is available from Apple Support — Clear your cache and cookies in Safari on Mac.
- Open Safari on your Mac.
- In the menu bar, choose Safari, then Settings. On older versions of macOS, this menu item is called Preferences.
- Click Privacy.
- Click Manage Website Data.
- Select one website or several websites, then click Remove, or click Remove All to clear data for every site.
- Close the window and, if a site still looks wrong, quit Safari and reopen it.
If you only want to fix one troublesome website, remove just that site’s data rather than everything, so you stay signed in elsewhere.
How To Clear Cache In Google Chrome On Mac
Chrome keeps its own cache, separate from Safari, so clearing Safari does nothing for Chrome and vice versa. Clear cache in the browser you actually use.
- Open Google Chrome on your Mac.
- Click the three-dot menu in the top-right corner of the window.
- Choose Delete browsing data. In some versions of Chrome, this appears as Clear browsing data.
- Choose a time range. For a full cleanup, select All time. For a recent problem only, Last 24 hours may be enough.
- Make sure Cached images and files is ticked.
- Leave Cookies and other site data unticked if you do not want to be signed out of websites.
- Click Delete data.
A faster route to the same window is the keyboard shortcut Command plus Shift plus Delete.
How To Clear System And User Cache On Mac
System cache lives in the Library folders. The user cache folder is ~/Library/Caches, and it contains folders for individual apps. Clearing it can free storage and fix a misbehaving app, but you should never delete the Caches folder itself, only the contents of app folders inside it, and only after a backup.
- Quit the app whose cache you want to clear, if it is open.
- In Finder, choose Go, then Go to Folder, and type ~/Library/Caches.
- Open the folder for the app in question and delete its contents, not the folder itself.
- Empty the Trash, then restart the app and check that it works normally.
If you are unsure what a folder contains, leave it alone. Deleting the wrong system files can break an app or macOS itself, and a backup is your safety net.
How To Clear App Cache On Mac
Many apps keep their own cache, and some include a clear-cache option in Settings or Preferences. Check the app’s settings first, because that is safer than deleting files by hand. If an app has no such option, quitting and reopening it often clears temporary files, and the ~/Library/Caches steps above apply for that app’s folder.
When Clearing Cache Helps And When It Does Not
Clearing cache helps when a website shows old content, an app crashes or behaves strangely after an update, or storage is tight and cache files have grown large. It does not help much for a slow Mac caused by a full hard drive, low memory, or an ageing processor. For storage problems, a guide to free up storage on iPhone shows similar principles for freeing space, and a guide to speed up a slow laptop explains diagnosing a slow computer before tweaking settings.
Common Mistakes To Avoid
- Deleting the entire Caches folder, instead of contents of individual app folders.
- Deleting system files outside the Caches folder without knowing what they are.
- Using a third-party cleaner that promises to speed up your Mac without checking what it removes.
- Clearing cookies when you only meant to clear cache, and being signed out everywhere unexpectedly.
- Skipping a backup before touching system or app cache folders.
After Clearing: What To Check
After clearing cache, reopen the website or app that was causing trouble and check that it loads correctly and that you are signed in as expected. If a site still shows old content, try a hard refresh, or quit and reopen the browser. If an app still misbehaves, restart your Mac, then check for app and macOS updates.
Frequently Asked Questions
Is It Safe To Clear Cache On Mac?
Yes, if you follow the steps above, keep a backup, and avoid deleting system files outside cache folders. Browser cache is the safest place to start.
Will Clearing Cache Delete My Files?
No. Clearing cache does not delete documents, photos, or personal files, though clearing cookies and website data will sign you out of websites.
How Often Should I Clear Cache On Mac?
Only when needed: when a website or app misbehaves, or when storage is tight. There is no need to clear cache daily.
Does Clearing Cache Speed Up My Mac?
It can help if a corrupted or very large cache was the problem, but it will not fix a slow Mac caused by low memory, a full drive, or old hardware.
Conclusion
Learning how to clear cache on Mac safely starts with the browser, then moves to app and system cache only when needed, and always with a backup in place. Clear browser cache first, check whether the problem is fixed, and only then touch app cache folders. That careful order keeps your Mac safe while fixing the most common cache problems.
