What cookies are and why you might want to delete them

Cookies are small files that websites store on your phone to remember things about you — your login information, what you put in a shopping cart, which articles you read. They make websites faster and more convenient. But they also let websites and advertisers track where you go and what you do, even after you leave their site.

Clearing cookies removes that stored data. You lose the convenience of staying logged in automatically, and websites won't remember your preferences the next time you visit. But you also erase the trail of information those sites collected about your browsing. How often you clear them depends on how much you value that convenience versus that privacy.

Key Takeaways

  • Cookies are stored in your browser app (Chrome, Firefox, Samsung Internet, or whatever you use), not in Android itself, so you clear them inside that app.
  • The exact steps differ by browser, but all of them have a "Clear browsing data" or "Clear cache" option in Settings.
  • You can choose to clear only cookies, or cookies plus cached images and browsing history at the same time.
  • Clearing cookies logs you out of most websites, so you will need to sign back in the next time you visit.

Clearing cookies in Chrome

Open Chrome and tap the three vertical dots in the top right corner. Tap Settings, then Privacy and security, then Clear browsing data.

A window will appear with checkboxes. Make sure Cookies and site data is checked. You can also check Cached images and files if you want to free up storage space. At the top, choose the time range — All time clears everything, or you can pick Last hour, Last 24 hours, or Last 7 days if you only want to clear recent cookies. Then tap Clear data.

Clearing cookies in Firefox

Open Firefox and tap the three horizontal lines in the bottom right corner. Tap Settings, then Delete browsing data.

Check the box next to Cookies. You can also check Cache to clear stored images and files. Then tap Delete browsing data. Firefox will clear cookies from all time by default — there is no option to choose a specific time range in the mobile app.

Clearing cookies in Samsung Internet

Open Samsung Internet and tap the three horizontal lines in the bottom right. Tap Settings, then Privacy, then Delete browsing data.

Check Cookies and site data. You can also check Cached images and files. Choose your time range from the dropdown at the top — All clears everything, or pick a specific period. Tap Delete.

What happens after you clear cookies

You will be logged out of most websites. The next time you visit a site that required a login, you will need to enter your username and password again. Websites will not remember your preferences — if you had set a dark theme or language choice, you may need to set it again.

Some cookies return when ready. If you visit a website right after clearing cookies, that site will create new cookies to track your visit. Clearing cookies is not a permanent block; it is a reset that happens once.

The difference between cookies and cache

Cookies are small text files that store information about you — login details, preferences, tracking data. Cache is a folder of images, videos, and other files that websites have already sent to your phone, stored so they load faster the next time you visit.

Clearing cookies removes tracking data and logs you out of sites. Clearing cache frees up storage space and forces websites to read fresh versions of images and files, which can sometimes fix a website that is loading incorrectly. You can clear one without clearing the other, though most people clear both at once.

When to clear cookies and when not to

Clear cookies if you are using a shared phone or a public device, or if you want to reduce the amount of tracking data websites collect about you. Clearing them regularly — once a week or once a month — is a reasonable middle ground between privacy and convenience.

You might not want to clear cookies if you use the same phone every day and value staying logged in automatically, or if you have saved passwords and preferences you do not want to re-enter. You can also clear cookies selectively: most browsers let you delete cookies from specific websites while keeping others.

Frequently Asked Questions

Will clearing cookies delete my saved passwords?

No. Passwords are stored separately from cookies, usually in your browser's password manager or in your Google account. Clearing cookies will not affect them. You will still be logged out, but your browser can usually log you back in automatically if you have saved that password.

Can I clear cookies from just one website?

Yes. In Chrome, visit the website, tap the lock icon or info icon next to the URL, tap Cookies, and you can delete cookies from that site only. In Firefox, go to Settings, Privacy, and scroll to Cookies — you can tap individual sites to delete their cookies. Samsung Internet does not have a per-site option in the mobile app.

Do I need to clear cookies regularly?

It depends on your comfort level. If you are concerned about tracking, clearing cookies monthly or weekly reduces the data advertisers can collect. If you value convenience and use a personal device, clearing them less often is fine. There is no security risk to leaving them — they are just data.

What is the difference between clearing cookies and using private browsing?

Private browsing (Incognito in Chrome, Private in Firefox) prevents your browser from storing cookies and history while you are in that mode. When you close the private window, nothing is saved. Clearing cookies removes what was already stored. Private mode is useful for one-time browsing; clearing cookies is useful for cleaning up after regular use.