What cache is and why you might want to delete it
Cache is temporary data your computer stores to make programs run faster. When you visit a website, your browser saves images and text so the next time you visit, the page loads quicker instead of downloading everything again. Your operating system does the same thing — it stores copies of files you use often so they open faster. Over time, this cache builds up and takes up gigabytes of storage space.
Deleting cache won't hurt your computer. The data is temporary by design — programs will rebuild it the next time you use them. You might delete cache to free up disk space, fix a program that's acting broken, or clear out old data you don't want sitting on your drive anymore.
Key Takeaways
- Browser cache stores website images and files; clearing it frees space and can fix loading problems on websites you visit often.
- Windows and Mac both have system cache in specific folders that you can delete safely without breaking anything.
- The steps differ depending on whether you use Windows or Mac, and which browser you use.
- Deleting cache takes a few minutes and programs will rebuild it automatically the next time you use them.
How to clear cache in Chrome, Firefox, and Edge
Most people use one of three browsers: Chrome, Firefox, or Edge. Each one stores cache differently, but the process is similar.
In Chrome: Click the three vertical dots in the top right corner. Select "Settings" from the menu. On the left side, click "Privacy and security," then "Clear browsing data." A window will pop up. Make sure "Cached images and files" is checked. At the top, change the time range to "All time" if you want to clear everything, or pick a specific range. Click "Clear data."
In Firefox: Click the three horizontal lines in the top right corner. Select "Settings." On the left, click "Privacy & Security." Under "Cookies and Site Data," click "Clear Data." Check the box next to "Cached Web Content." Click "Clear."
In Edge: Click the three dots in the top right. Select "Settings." On the left, click "Privacy, search, and services." Under "Clear browsing data," click "Choose what to clear." Check "Cached images and files." Click "Clear now."
How to delete system cache on Windows
Windows stores system cache in hidden folders. You need to show hidden files first, then navigate to the right location.
Open File Explorer and click the "View" tab at the top. Check the box that says "Hidden items." Now you can see hidden folders. Navigate to C:\Users\[Your Username]\AppData\Local\Temp. This folder holds temporary files and cache. Select all the files in this folder (press Ctrl+A), then press Delete. Windows may say some files are in use — that's normal. Click "Skip" for those files.
You can also use Disk Cleanup, which is built into Windows. Press the Windows key and type "Disk Cleanup." Open it. Select your C: drive (or whichever drive Windows is installed on). Check the boxes next to "Temporary files," "Recycle Bin," and "Temporary internet files." Click "OK," then "Delete Files."
How to delete system cache on Mac
Mac stores cache in the Library folder, which is hidden by default. You can access it through Finder.
Open Finder. Press Command+Shift+G to open "Go to Folder." Type ~/Library/Caches and press Enter. This folder contains cache files from your applications. You can delete individual app caches by opening the folder for that app and removing the files inside, or you can delete the entire Caches folder if you want to clear everything at once. Drag the folder to Trash, then empty Trash.
If you want a simpler approach, Mac also has a built-in tool. Open System Settings, click "General," then "Storage." Click "Manage," then look for "Recommendations." You'll see options to delete old downloads, large old files, and language files you don't use. These aren't cache exactly, but they free up space the same way.
When deleting cache actually solves problems
Clearing cache fixes specific problems. If a website looks broken — images won't load, buttons don't work, or the layout looks wrong — clearing your browser cache often fixes it because the browser will read fresh copies of those files. If a program is running slowly or crashing, clearing its cache can help because corrupted cache files sometimes cause crashes.
Clearing cache does not fix hardware problems like a failing hard drive, viruses, or malware. If your computer is slow and clearing cache doesn't help, the problem is something else. If you're trying to free up space and deleting cache only frees up a gigabyte or two, your real problem is large files — videos, photos, or old backups — not cache.
How much space cache actually takes up
Browser cache typically uses 100 megabytes to 2 gigabytes, depending on how much you browse and how long you've been using the same browser. System cache on Windows can be several gigabytes. On Mac, cache is usually smaller — a few hundred megabytes to 1 gigabyte.
If you're trying to free up 50 gigabytes of space, cache won't get you there. Look for old video files, photo libraries you've backed up elsewhere, or old downloads instead. If you're trying to free up 5 gigabytes, clearing cache is worth doing as part of a larger cleanup, but it won't be the main source of freed space.
How often you should delete cache
There's no set schedule. Most people clear browser cache once a month or when they notice a website acting broken. You don't need to clear system cache regularly — Windows and Mac manage it automatically and delete old files on their own. The only reason to clear system cache manually is if you're running low on disk space or troubleshooting a specific problem.
If you browse a lot and want cache cleared automatically, you can set it up. In Chrome, go to Settings, click "Privacy and security," then "Clear browsing data." Check "Always clear cookies and site data when you close the browser." Firefox and Edge have similar options in their settings.
Frequently Asked Questions
Will deleting cache make my computer faster?
Not noticeably. Cache is designed to make things faster, so deleting it might make some programs slightly slower the next time you use them while they rebuild the cache. You'll only see a speed improvement if corrupted cache was causing a program to crash or freeze.
Can I delete cache while programs are running?
For browser cache, yes — close the browser first, then clear it. For system cache, Windows and Mac prevent you from deleting files that are currently in use, so they'll skip those automatically. It's safest to close all programs before clearing system cache.
What's the difference between cache and cookies?
Cache stores images, videos, and code to make pages load faster. Cookies store login information and preferences so websites remember you. Deleting one doesn't delete the other — you have to clear them separately in your browser settings.
Is it safe to delete everything in the Temp folder on Windows?
Mostly yes, but Windows will skip files that are currently in use. Don't force-delete files — let Windows skip them. Restart your computer and try again if you want to clear more files, since some programs lock temporary files while they're running.
Do I need special software to delete cache?
No. Everything you need is built into Windows, Mac, and your browser. Third-party cleaning software can delete cache, but it's not necessary and sometimes deletes more than you intended.