What clearing your cache does and why you might want to do it

Your computer stores temporary files called cache to speed things up — your web browser saves images and code from websites you visit, your operating system caches program data, and applications store temporary files to load faster next time. Over time, this cache can grow large enough to slow down your computer, cause programs to behave oddly, or take up disk space you need for other things.

Clearing cache is safe and reversible. The worst that happens is websites take a few seconds longer to load the next time you visit them, because your browser has to read fresh copies of images and files instead of using the stored versions. You will not lose passwords, bookmarks, or any files you actually created — those are stored separately from cache.

The most common reason to clear cache is when a website or program is not displaying correctly, loading slowly, or showing outdated information. Clearing cache also frees up disk space if your drive is running low, and some people do it regularly for privacy — cached files can reveal which websites you visited and when.

Key Takeaways

  • Browser cache is cleared differently in Chrome, Firefox, Safari, and Edge, but all of them let you clear it from a menu in the browser itself without restarting your computer.
  • Windows and Mac both have system-level cache that can be cleared through Settings or System Preferences, though most people only need to clear their browser cache.
  • Clearing cache takes less than a minute and does not delete your passwords, bookmarks, or any files you created — only temporary files your computer stored automatically.
  • If a website or program is behaving strangely, clearing its cache is usually the first troubleshooting step before you contact support or restart your computer.

Clearing browser cache in Chrome, Firefox, Safari, and Edge

Your web browser stores the most cache, and clearing it is the same basic process in every browser: open the browser menu, find the option to clear browsing data or history, and select the cache option. The exact names and locations differ slightly by browser.

In Chrome: Click the three vertical dots in the top right corner, select "Settings," then click "Privacy and security" on the left side. Click "Clear browsing data." A window will open with options for what to delete. Make sure "Cached images and files" is checked, then click "Clear data." You can choose to clear cache from the last hour, last 24 hours, last 7 days, last 4 weeks, or all time — pick whichever matches how far back you want to go.

In Firefox: Click the three horizontal lines (hamburger menu) in the top right, select "Settings," then click "Privacy & Security" on the left. Under "Cookies and Site Data," click "Clear Data." A window opens with two checkboxes — make sure "Cached Web Content" is checked, then click "Clear." Firefox will also let you set it to clear cache automatically every time you close the browser if you scroll down and check "Clear history when Firefox closes."

In Safari: Click "Safari" in the top menu bar, then select "Settings." Click the "Privacy" tab at the top. Click "Manage Website Data" on the right side. You will see a list of websites that have stored cache. You can click individual sites and click "Remove" to delete their cache, or click "Remove All" to clear everything at once.

In Microsoft Edge: Click the three horizontal dots in the top right corner, select "Settings," then click "Privacy, search, and services" on the left. Under "Clear browsing data," click "Choose what to clear." A window opens — make sure "Cached images and files" is checked, then click "Clear now." You can also set Edge to clear cache automatically by toggling "Choose what to clear every time you close the browser."

Clearing system cache in Windows

Windows stores temporary files in a folder called the Temp folder, and clearing it frees up disk space. This is optional unless you are running low on storage or a program is malfunctioning. The safest way is to use the built-in Disk Cleanup tool, which only deletes files Windows knows are safe to remove.

Open the Start menu and type "Disk Cleanup" into the search box, then click the Disk Cleanup app. A window will ask you to select a drive — choose your main drive (usually C:). Disk Cleanup will scan for temporary files and show you a list of categories you can delete. Check the boxes next to "Temporary files," "Recycle Bin," and "Temporary Internet Files," then click "Delete Files." Windows will ask you to confirm, then remove those files.

If you want to clear cache manually without using Disk Cleanup, you can open File Explorer, type %temp% into the address bar at the top, and press Enter. This opens your Temp folder. Select all files (Ctrl+A), then delete them (Delete key). Windows may say some files are in use and skip them — that is normal and safe. Do not worry about files it cannot delete; they are being used by running programs.

Clearing system cache in Mac

Mac stores cache in hidden folders that are harder to access than Windows, and most people do not need to clear system cache on a Mac — clearing browser cache is usually enough. If you want to free up disk space or clear process cache, the easiest method is to use the built-in Storage management tool.

Click the Apple menu in the top left corner, select "System Settings" (or "System Preferences" on older Macs), then click "General." Click "Storage" on the left side. Mac will show you what is taking up space on your drive. You will see an "Empty Trash" button at the bottom right — click it to permanently delete files in your Trash. You may also see an "Optimize" button that lets Mac automatically remove old files and cache — click it if you want Mac to manage storage for you.

If you want to manually clear process cache, open Finder, click "Go" in the top menu bar, then click "Go to Folder." Type ~/Library/Caches and press Enter. This opens your Caches folder. You can delete individual process cache folders (look for folder names that match the apps you use), or select all and delete everything. Restart your computer afterward so applications can rebuild their cache if needed.

Clearing cache for specific programs and applications

Some programs store their own cache separate from your browser and operating system. If a program is running slowly or displaying old data, clearing its cache can help. The process varies by program, but most follow the same pattern: open the program, look for Settings or Preferences, find a Cache or Storage option, and click Clear or Delete.

Spotify: Open the app, click your profile icon in the top right, select "Settings," scroll down to "Cache," and click "Clear Cache."

Slack: Click your profile icon in the top left, select "Preferences," click "Advanced," then click "Clear all cached files."

Discord: Click the gear icon next to your username at the bottom left, scroll down to "App Settings," click "Voice & Video," then scroll to "Clear Cache."

Steam: Click "Steam" in the top left menu, select "Settings," click "Downloads," then click "Clear read Cache."

If you cannot find the cache option in a program you use, search online for "[program name] clear cache" — most programs have documentation explaining where the option is located.

When to clear cache and what to expect afterward

Clear your browser cache if a website is not loading correctly, showing outdated information, or running slowly. Clear system cache if your computer is running low on disk space or a program is behaving strangely. You can clear cache as often as you want — there is no downside to doing it regularly.

After you clear cache, websites and programs may take a few seconds longer to load the first time you use them, because they have to read fresh files instead of using stored copies. This slowdown is temporary and only happens once per website or program. After that first load, cache will start building up again automatically, and things will return to normal speed.

If clearing cache does not fix a problem you are having, the next steps are usually to restart your computer, update the program or browser, or check if your internet connection is working properly. If a problem persists after clearing cache and restarting, contact the program's support team or your internet provider.

Frequently Asked Questions

Will clearing cache delete my passwords and bookmarks?

No. Passwords and bookmarks are stored separately from cache. When you clear cache, you only remove temporary files — your saved passwords, bookmarks, and browsing history stay intact. If you want to delete your browsing history as well, most browsers give you the option to select that separately when you clear cache.

How much disk space does cache usually take up?

Browser cache typically ranges from 100 MB to 1 GB depending on how many websites you visit and how long you have been using the browser without clearing it. System cache on Windows can be several gigabytes. If your drive is full, clearing cache may free up enough space to make a noticeable difference, but if you are running very low on storage, you may need to delete larger files like old videos or programs.

Should I clear cache on a schedule, or only when something goes wrong?

Only when something goes wrong is fine for most people. If you are concerned about privacy or running low on disk space, you can set your browser to clear cache automatically every time you close it — most browsers have this option in Settings. There is no performance benefit to clearing cache regularly if your computer is working normally.

What is the difference between clearing cache and clearing cookies?

Cache stores images, code, and files to make websites load faster. Cookies store information like login details and website preferences. Clearing cache does not log you out of websites, but clearing cookies does. Most browsers let you clear them separately, so you can clear cache without losing your login information.

Can I clear cache without restarting my computer?

Yes. You can clear browser cache, system cache, and process cache without restarting. Some applications may need to be closed before you clear their cache, but you do not need to restart your computer. If you do restart after clearing cache, programs may take slightly longer to open the first time because they are rebuilding their cache.