Clearing cache means deleting temporary files your browser or apps store on your device to load websites and programs faster next time
When you visit a website or use an app, your device downloads images, scripts, and other pieces and saves them locally. The next time you visit that same site or open that app, your device loads these saved pieces instead of downloading them again — which is faster. That collection of saved pieces is your cache. Clearing it means deleting all those temporary files.
Your device stores cache in a specific folder that the browser or app manages. You do not see these files in your normal file explorer unless you look in hidden system folders. When you clear cache through your browser or app settings, you are telling it to empty that folder entirely.
Key Takeaways
- Cache is temporary files downloaded from websites and apps that your device stores to make them load faster the next time you visit.
- Clearing cache deletes these temporary files but does not delete your passwords, bookmarks, or login information unless you specifically choose to clear those too.
- Websites sometimes show you outdated versions of pages because they are loading from your cache instead of fetching the newest version from their server.
- Clearing cache frees up storage space on your device, though usually only a few hundred megabytes unless you have not cleared it in years.
Why your browser or app stores cache in the first place
Cache exists to make your experience faster. When you load a website, your browser downloads the page's text, images, videos, and code. If that website has not changed much since your last visit, downloading all of it again wastes time and data. Instead, your browser keeps a copy of what it downloaded and uses that copy the next time you visit.
The same logic applies to apps. Spotify stores album artwork and song metadata locally so it does not have to read the same image every time you play a song. Maps apps cache street view images and map tiles so they load when ready when you zoom in on a familiar area. This is why apps often feel snappier on your second use than your first.
When clearing cache actually solves a problem
If a website looks broken, loads slowly, or shows you outdated information, clearing cache is often the first troubleshooting step. Websites update their design, fix bugs, and change their content. If your browser is still loading an old version from your cache, you will see the old version instead of the new one. Clearing cache forces your browser to read the current version from the website's server.
You might also clear cache if a website is not recognizing that you logged out. Sometimes a cached login token or session cookie causes a site to think you are still signed in even after you clicked logout. Clearing cache removes that stale token.
Storage space is another reason. If you have not cleared cache in years, it can take up several gigabytes. On a phone or laptop with limited storage, clearing cache can free up enough space to install updates or read files.
What clearing cache does not do
Clearing cache does not delete your passwords. Browsers store passwords in a separate, encrypted vault. You have to specifically choose to clear passwords when you clear cache — most browsers ask you what you want to delete and let you uncheck "passwords" if you want to keep them.
It does not delete your browsing history, bookmarks, or saved form data unless you tell it to. These are stored separately from cache. You can clear only cache and leave everything else intact.
Clearing cache does not make you anonymous or erase your activity from your internet service provider or the websites you visit. Websites log your visits on their own servers regardless of what you delete locally. Your ISP sees all your traffic whether your cache is full or empty. Cache is only a local copy on your device.
How to clear cache on common browsers and devices
On Chrome, open the menu (three dots in the top right), select Settings, then Privacy and Security, then Clear Browsing Data. A window appears asking what time range you want to clear and what types of data. Select "All time" and make sure "Cached images and files" is checked, then click Clear Data.
On Safari, go to History in the menu bar, then select Clear History. A dropdown asks how far back you want to clear — choose "all history" to clear all cache. On Firefox, open the menu (three horizontal lines), select Settings, then Privacy and Security, scroll to Cookies and Site Data, and click Clear Data.
On Android, open Chrome, tap the menu (three dots), go to Settings, then Privacy, then Clear Browsing Data. On iPhone, go to Settings, scroll to Safari, tap Clear History and Website Data, and confirm. Most apps have their own cache-clearing option buried in their settings under Storage or Data, though the exact path varies by app.
How often you should clear cache
There is no single right answer. If you use your device normally and websites load fine, you do not need to clear cache regularly. Cache is designed to be there. Clearing it too often defeats the purpose and makes websites load slower because your browser has to read everything fresh each time.
Clear cache when a website is misbehaving, when you are running low on storage space, or if you are concerned about someone else on your device seeing which sites you have visited. Some people clear cache monthly as a routine maintenance habit. Others go years without clearing it. Both approaches are fine.
Cache versus cookies — what is the difference
Cache and cookies are both files your browser stores locally, but they serve different purposes. Cache stores images, scripts, and other large files that make websites load faster. Cookies store small pieces of information like your login status, your language preference, or items in your shopping cart.
When you clear cache, you delete the large files but often keep the cookies. This is why you might still be logged into a website after clearing cache — your login cookie is still there. If you want to log out completely, you need to clear cookies too. Most browsers let you choose which types of data to clear, so you can clear cache without touching cookies, or vice versa.
Frequently Asked Questions
Will clearing cache make my device faster?
Clearing cache might make your device slightly faster if it was running low on storage space, since you are freeing up gigabytes of files. But clearing cache does not speed up your device's processor or memory. Websites may load slower the first time you visit them after clearing cache because your browser has to read everything fresh.
Does clearing cache delete my passwords?
No, not unless you specifically check the box to clear passwords when you clear cache. Passwords are stored separately in an encrypted vault. When you clear cache, most browsers show you a checklist of what to delete — you can uncheck passwords and keep them while deleting cache.
Can I clear cache for just one website?
Most browsers do not have a built-in option to clear cache for a single site. You can clear all cache, or you can clear cache from a specific date range. Some browsers let you clear cookies for individual sites through their site settings, but cache clearing is usually all-or-nothing.
What happens if I never clear cache?
Your cache will keep growing until it takes up several gigabytes of storage. On devices with limited storage, this can slow down your device or prevent you from installing updates. Websites may also show you outdated versions of pages more often because your cache is full of old files.
Is clearing cache a privacy thing?
Clearing cache removes evidence of which websites you visited from your device, but it does not hide your activity from your internet service provider or the websites themselves. If privacy is your concern, clearing cache is a small part of the picture — it only affects what is stored locally on your device.