What clearing cache actually does

Cache is a folder on your computer where your browser stores copies of websites you visit — images, text, videos, code. When you return to that site, your browser loads the stored copy instead of downloading everything again, which makes the page load faster. Clearing cache deletes those stored copies and forces your browser to read fresh versions the next time you visit.

You might clear cache because a website looks broken or won't load properly (the stored copy is outdated), because you want to free up disk space, or because you're concerned about what your browser knows about your browsing history. Clearing cache does not log you out of websites or delete your passwords — that's a separate action called clearing cookies.

Key Takeaways

  • Cache is a storage folder your browser uses to load websites faster by keeping local copies of images, text, and code.
  • Clearing cache removes those stored copies but does not delete passwords, login information, or your browsing history.
  • The steps to clear cache differ by browser — Chrome, Firefox, Safari, and Edge each have their own menu path.
  • You can set your browser to clear cache automatically when you close it, or clear it manually whenever you choose.

How to clear cache in Chrome

Open Chrome and click the three vertical dots in the top right corner. Select Settings from the menu that appears. On the left side, click Privacy and security, then click Clear browsing data.

A window will open with several checkboxes. Make sure Cached images and files is checked — this is the cache. At the top of the window, use the dropdown menu to choose the time range: All time clears everything, Last 24 hours clears only the past day, and Last 7 days or Last 4 weeks are also options. Click Clear data when you're ready.

How to clear cache in Firefox

Open Firefox and click the three horizontal lines (called a hamburger menu) in the top right corner. Select Settings. On the left, click Privacy & Security. Under the section labeled Cookies and Site Data, click the button that says Clear Data.

A small window appears. Make sure the checkbox next to Cached Web Content is checked. You can also check Cookies and Site Data if you want to clear those too, but they are separate from cache. Click Clear to finish.

How to clear cache in Safari

Open Safari. In the menu bar at the very top of your screen, click Safari (not inside the browser window — in the Mac system menu). Select Settings or Preferences. Click the Privacy tab.

Click the button labeled Manage Website Data. A list of websites appears. You can select individual sites and click Remove, or click Remove All to clear cache for every site at once. On newer versions of Safari, you can also go to Safari > Clear History and choose the time range you want to clear.

How to clear cache in Microsoft Edge

Open Edge and click the three dots in the top right corner. Select Settings. On the left side, click Privacy, search, and services. Under Clear browsing data, click the button that says Choose what to clear.

A window opens with checkboxes. Make sure Cached images and files is checked. Use the dropdown at the top to select your time range — All time, Last hour, Last 24 hours, Last 7 days, Last 4 weeks, or Last 3 months. Click Clear now.

Setting your browser to clear cache automatically

Instead of clearing cache manually each time, you can tell your browser to do it automatically whenever you close it. In Chrome, go to Settings > Privacy and security and turn on Clear cookies and site data when you quit Chrome. In Firefox, go to Settings > Privacy & Security, scroll to Cookies and Site Data, and check Delete cookies and site data when Firefox is closed.

In Safari, go to Settings > Privacy and look for an option to remove website data (the exact wording varies by macOS version). In Edge, go to Settings > Privacy, search, and services and toggle on Clear browsing data under Clear browsing data. Once you turn this on, your browser will automatically delete cache every time you close it completely — not just when you close a single tab.

When you might want to clear cache

Clear cache if a website looks wrong, won't load, or shows outdated information. This is often the first troubleshooting step because an old cached version of the page can cause display problems. Clear cache if you're running low on storage space — cached files can add up, especially if you browse heavily. Clear cache if you're using a shared computer and want to remove traces of the sites you visited, though this does not hide your activity from your internet provider or network administrator.

You do not need to clear cache regularly for security reasons. Cached files themselves are not a privacy risk — they are just copies of public web pages. If you're concerned about what your browser remembers about you, clearing cookies and browsing history is more relevant than clearing cache.

Frequently Asked Questions

Will clearing cache delete my passwords?

No. Passwords are stored separately in your browser's password manager, not in cache. To delete saved passwords, you need to go to your browser's password settings and remove them individually. Clearing cache only removes stored images, text, and code from websites.

Will clearing cache log me out of websites?

Not usually. Login information is stored in cookies, which are separate from cache. However, if you clear both cache and cookies at the same time (which some browsers do by default), you may be logged out. Check the checkboxes in the clear data window to see exactly what you're removing.

How much space does cache take up?

It varies widely depending on how much you browse and which sites you visit. Cache can range from a few hundred megabytes to several gigabytes. If you're running out of storage space, clearing cache can help, but clearing old files or uninstalling unused programs usually frees up more space.

Is it safe to clear cache?

Yes, it is completely safe. Clearing cache will not break your browser or damage your computer. The only downside is that websites will load slightly slower the next time you visit them, because your browser has to read everything fresh instead of using the stored copies.

Can I clear cache for just one website?

Yes. In Chrome, Firefox, and Edge, you can right-click on any website and select an option like Delete or Remove to clear cache just for that site. In Safari, you can use the Manage Website Data button to select individual sites and remove them. This is useful if one site is broken but you don't want to clear cache for everything.