What clearing cache does and why you might need to

Cache is temporary data that Facebook stores on your device to load faster next time you visit. Over time, this cached data can pile up and cause the app to run slowly, display old information, or stop responding. Clearing it removes that stored data and forces Facebook to download fresh information the next time you open it.

You might clear cache if Facebook is freezing, loading slowly, showing outdated posts, or refusing to load images and videos. It also frees up storage space on your device. Clearing cache does not delete your messages, photos, or account information — those stay on Facebook's servers and in your account.

Key Takeaways

  • Clearing cache removes temporary files stored on your device but does not affect your Facebook account, messages, or photos.
  • On iPhone, go to Settings > General > iPhone Storage > Facebook, then offload or delete the app; on Android, go to Settings > Apps > Facebook > Storage > Clear Cache.
  • On Windows or Mac, you can clear cache through your web browser settings or through Facebook's own settings menu.
  • After clearing cache, Facebook will take a moment to reload everything the next time you open it, which may feel slightly slower for a few seconds.

How to clear cache on iPhone

On iPhone, you clear Facebook cache through your device settings, not through the app itself. Open Settings, then tap General. Scroll down and tap iPhone Storage. Find Facebook in the list and tap it.

You have two options. Tap Offload App to remove the app but keep your data, then reinstall it from the App Store — this clears cache while preserving your login information. Or tap Delete App, then Delete App again to confirm, and reinstall it fresh from the App Store. Both methods clear the cache. After reinstalling, open Facebook and log in again.

How to clear cache on Android

On Android, open Settings and go to Apps or Application Manager (the exact name varies by phone brand). Find and tap Facebook. Tap Storage or Storage and Cache. Tap Clear Cache — this removes the cached data without deleting the app or your login information.

If you want to clear more than just cache, tap Clear Data instead, but this will log you out and remove all stored information on the device. You will need to log back in. For most situations, Clear Cache alone is enough.

How to clear cache on Windows

If you use Facebook in a web browser on Windows, you can clear cache through your browser. In Chrome, Edge, or Firefox, press Ctrl + Shift + Delete to open the Clear Browsing Data window. Select All Time from the time range dropdown. Check Cached Images and Files, then click Clear Data.

You can also clear cache specifically for Facebook without clearing your entire browser cache. In Chrome, go to Settings > Privacy and Security > Cookies and Other Site Data. Search for facebook.com, click it, then click Remove. This clears only Facebook's cached data.

How to clear cache on Mac

On Mac, open your web browser. In Safari, go to History > Clear History, select All History from the dropdown, and click Clear History. In Chrome or Firefox, press Command + Shift + Delete to open the Clear Browsing Data window. Select All Time, check Cached Images and Files, and click Clear.

To clear only Facebook's cache in Safari, go to Safari > Settings > Privacy. Click Manage Website Data, search for facebook.com, select it, and click Remove. This removes only Facebook's stored data without affecting other websites.

What happens after you clear cache

The next time you open Facebook, the app or website will take a few extra seconds to load because it has to download everything fresh instead of using stored files. Images, videos, and pages may load slightly slower for the first minute or two. After that, Facebook will rebuild its cache and run normally again.

Your account, messages, photos, and all personal data remain unchanged. You will stay logged in on most devices. If you cleared data instead of just cache on Android, you will need to log in again.

When to clear cache versus when to restart the app

If Facebook is running slowly or freezing, try closing and reopening the app first — this often fixes the problem without clearing cache. Swipe up from the bottom of your iPhone screen (or use the app switcher on Android) and close Facebook completely, then reopen it.

Clear cache if restarting does not help, if you are running low on storage space, or if Facebook is displaying very old information. Clearing cache is more thorough than restarting but takes longer. You do not need to clear cache regularly — only when you notice a problem.

Frequently Asked Questions

Will clearing cache log me out of Facebook?

Clearing cache alone will not log you out on most devices. If you cleared data instead of cache on Android, or deleted and reinstalled the app on iPhone, you will need to log in again. Check your login status after clearing cache — if you are still logged in, you are done.

Does clearing cache delete my messages or photos?

No. Cache is only temporary files stored on your device to make Facebook load faster. Your actual messages, photos, and account information stay on Facebook's servers and in your account. Clearing cache removes none of that.

How much storage space does Facebook cache take up?

This varies widely depending on how long you have used Facebook and how many images and videos you have viewed. On iPhone, you can see the exact size in Settings > General > iPhone Storage > Facebook. On Android, go to Settings > Apps > Facebook > Storage to see the cache size.

Can I prevent Facebook from storing cache?

Not completely — apps and websites need to store some temporary data to function. On iPhone, you can limit app data in Settings > Privacy > Tracking, but this does not prevent cache. The best approach is to clear cache every few months if storage is tight or performance is slow.

What if clearing cache does not fix the problem?

If Facebook still runs slowly after clearing cache, try uninstalling and reinstalling the app completely. If the problem persists on multiple devices, the issue may be with your internet connection or with Facebook itself. Try using Facebook in a web browser instead to see if the problem is app-specific.