What cache is and why clearing it helps

Cache is temporary data your computer stores to load things faster the next time you use them. When you visit a website, your browser saves images, scripts, and page layouts. When you open a program, it caches parts of files it thinks you'll need again. This speeds things up — but over time, cache files pile up and take up disk space, and old cached data can sometimes cause programs to behave oddly.

Clearing cache won't make your computer dramatically faster unless you have months or years of buildup. But it does free up storage space and can fix problems where a program keeps showing you outdated information or won't load properly. Think of it as clearing out a junk drawer — you probably don't need most of what's in there.

Key Takeaways

  • Browser cache lives in a specific folder on your hard drive and includes images, scripts, and page data from websites you've visited.
  • You can clear browser cache through your browser's settings menu in under a minute, and you can choose to clear only the past day, week, or month instead of everything.
  • Windows and Mac both have system cache folders that accumulate temporary files, and clearing them requires navigating to hidden folders or using built-in cleanup tools.
  • Clearing cache will not delete your passwords, bookmarks, or saved login information unless you specifically choose those options during the clearing process.
  • Some programs like Spotify, Discord, and Steam store their own cache separately, and each one has its own folder you can delete manually.

Clearing cache in Chrome, Firefox, Safari, and Edge

Browser cache is the easiest to clear because the browser gives you a built-in option. In Chrome, click the three-dot menu in the top right, select Settings, then Privacy and Security, then Clear Browsing Data. A window opens where you can choose the time range (Last hour, Last 24 hours, Last 7 days, Last 4 weeks, or All time) and what to clear. Check only "Cookies and other site data" and "Cached images and files" unless you want to clear passwords or autofill data too. Click Clear Data.

In Firefox, click the menu button (three horizontal lines) in the top right, select Settings, then Privacy & Security. Scroll to Cookies and Site Data and click Clear Data. Choose whether to clear everything or just cache. In Safari on Mac, click Safari in the menu bar, select Settings, go to Privacy, and click Manage Website Data. Select all sites and click Remove. On Edge, click the three-dot menu, select Settings, then Privacy, Search, and Services, then Clear Browsing Data. Choose your time range and what to clear, then select Clear Now.

None of these steps will delete your saved passwords or bookmarks unless you check that box. If you want to keep your login information but clear everything else, uncheck "Passwords" and "Autofill form data" before you clear.

Clearing system cache on Windows

Windows stores temporary files in a folder called Temp. To access it, press Windows key + R to open the Run dialog, type %temp% and press Enter. A folder opens showing temporary files. Select all (Ctrl + A), then delete. Windows may say some files are in use — that's normal. Click Skip for those files and delete the rest.

You can also use Windows' built-in Disk Cleanup tool. Press Windows key, type Disk Cleanup, and open it. Select your C: drive (or whichever drive Windows is on), then click OK. Check the boxes next to "Temporary files," "Recycle Bin," and "Temporary Internet Files." Click Delete Files. This is safer than manually deleting the Temp folder because it only removes files Windows knows are safe to delete.

A third option is Storage Sense, which runs automatically but you can trigger it manually. Go to Settings, System, Storage, and click Cleanup recommendations. Windows shows you what it can delete and asks before removing anything. This is the gentlest approach and the one least likely to cause problems.

Clearing system cache on Mac

Mac stores cache in a hidden Library folder. Open Finder, press Command + Shift + G to open Go to Folder, type ~/Library/Caches and press Enter. You'll see folders for different programs. You can delete individual program caches (like Google Chrome Cache or Firefox Cache) or select all and delete. If a program is running, Mac won't let you delete its cache — close the program first.

Alternatively, use Mac's built-in storage management. Click the Apple menu, select About This Mac, then Storage. Click Manage. Mac shows you what's taking up space and offers to remove old files, large old files, and language files you don't use. Click the category you want to clean up and follow the prompts. This is safer than manually deleting cache folders because Mac only removes things it's sure are safe.

Clearing cache in specific programs

Some programs store cache in their own locations. Spotify cache lives in a folder you can find by opening Spotify, clicking your profile, selecting Settings, then scrolling to Storage and clicking Delete Cache. Discord cache is in AppData\Local\Discord\Cache on Windows (type %appdata% in Run, then navigate to Discord) or ~/Library/process Support/Discord/Cache on Mac. You can delete the entire Cache folder while Discord is closed.

Steam cache is in the Steam folder under steamapps\shadercache on Windows. You can delete this folder without affecting your games. Adobe Creative Cloud programs cache in AppData\Local\Adobe on Windows or ~/Library/process Support/Adobe on Mac. Look for folders named Cache or Temp and delete them. Always close the program before deleting its cache folder.

What not to delete when clearing cache

Don't delete files in System32 (Windows) or System (Mac) folders — these contain files your operating system needs to run. Don't delete anything in Program Files or Applications folders unless you're specifically deleting a program. Don't delete your Downloads folder thinking it's cache — it's where your actual files live. If you're using the built-in cleanup tools (Disk Cleanup, Storage Sense, or Mac's Manage Storage), you're safe because these tools only touch files they know are temporary.

If you manually navigate to the Temp folder and see a file you're unsure about, leave it alone. Windows and Mac are designed to ignore files they need, so deleting a few extra temporary files won't break anything — but deleting system files can cause serious problems. When in doubt, use the official cleanup tools instead of manual deletion.

How often to clear cache

There's no set schedule. If your computer is running fine and you have plenty of free disk space, you don't need to clear cache at all. If you notice your browser is slow, a program keeps showing outdated information, or you're running low on storage space, that's when to clear it. Some people clear browser cache monthly, others yearly. It depends on how much you browse and how much storage space you have.

If you want cache cleared automatically, most browsers have an option to clear it when you close the browser. In Chrome, go to Settings, Privacy and Security, and toggle "Clear cookies and site data when you quit Chrome." In Firefox, go to Settings, Privacy & Security, and under Cookies and Site Data, check "Delete cookies and site data when Firefox is closed." This keeps cache from building up in the first place, though it means you'll have to log back into websites each time you close your browser.

Frequently Asked Questions

Will clearing cache delete my passwords and saved logins?

Only if you check that box during the clearing process. When you open the clear cache dialog in your browser, you'll see checkboxes for different types of data. "Cookies and cached images" is separate from "Passwords" and "Autofill data." Uncheck passwords before you clear, and they'll stay saved.

Why does my browser keep asking me to log in after I clear cache?

Because you cleared cookies along with cache. Websites use cookies to remember that you're logged in. If you clear cookies, you have to log in again. If you want to keep your logins, uncheck "Cookies and other site data" and clear only "Cached images and files."

Is it safe to delete everything in the Temp folder?

Mostly yes, but Windows may say some files are in use and won't let you delete them — that's fine, just skip those. Using Disk Cleanup or Storage Sense is safer because they only delete files Windows has confirmed are temporary and not needed.

Can clearing cache fix a program that's crashing or freezing?

Sometimes. If a program is using corrupted cached data, clearing its cache folder can fix it. Close the program, delete its cache folder, then restart the program. If the problem continues, the issue is something else.

Does clearing cache make my computer faster?

Usually not noticeably, unless you have years of cache buildup taking up gigabytes of space. Clearing cache frees up disk space, which can help if your drive is nearly full. For speed, upgrading your RAM or switching to an SSD makes a bigger difference than clearing cache.