Clearing cookies removes tracking files that follow you across websites

Cookies are small files that websites store on your phone to remember you — your login information, what you put in a shopping cart, sites you've visited. Data brokers use cookies to track which websites you visit and build a profile of your interests and habits. Clearing them regularly breaks that tracking chain and removes one way your browsing gets collected and sold.

The process is different on iPhone and Android, and different again depending on which browser you use. Most phones let you clear cookies in under a minute from the settings menu. You can also set your browser to delete cookies automatically every time you close it, which means you won't have to remember to do it manually.

Key Takeaways

  • Cookies stored on your phone let websites and data brokers track your browsing habits across the internet.
  • On iPhone, go to Settings > Safari (or your browser app) > Clear History and Website Data to remove cookies when ready.
  • On Android, open your browser's menu, find Settings > Privacy or History, and select the option to clear browsing data and cookies.
  • You can set most browsers to automatically delete cookies when you close the app, so tracking files don't accumulate over time.
  • Clearing cookies will log you out of most websites, so you'll need to sign back in the next time you visit.

How to clear cookies on iPhone

On iPhone, the fastest way is through the Safari settings. Open Settings, scroll down and tap Safari, then tap "Clear History and Website Data." A menu will appear asking how far back you want to clear — choose "all time" to remove everything. Tap the blue "Clear History and Data" button at the bottom. This removes your browsing history, cookies, and cached files in one step.

If you use a different browser like Chrome or Firefox, the process is slightly different. Open the app, tap the menu icon (three horizontal lines or dots in the corner), go to Settings, then Privacy or History, and look for an option that says "Clear Browsing Data" or "Clear Private Data." Select cookies and cached data, choose the time range, and confirm. Each browser names these options differently, but they all sit in the same general location in the app's settings.

How to clear cookies on Android

On Android with Chrome, open the app and tap the three-dot menu in the top right corner. Tap Settings, then Privacy and Security, then "Clear Browsing Data." A window will pop up with checkboxes — make sure "Cookies and site data" is checked. At the top, select "All time" from the dropdown menu, then tap "Clear Data." Chrome will remove your cookies and cached files when ready.

If you use Firefox on Android, open the app, tap the menu icon (three horizontal lines), go to Settings, then Privacy, and scroll down to "Delete Browsing Data." Check the box next to "Cookies" and any other data you want to remove, then tap "Delete Browsing Data" at the bottom. Samsung Internet (the default browser on Samsung phones) has a similar menu — tap the three-dot icon, go to Settings > Privacy > Delete Browsing Data, check cookies, and confirm.

Setting your browser to clear cookies automatically

Instead of clearing cookies manually every time, you can tell your browser to delete them automatically when you close the app. On iPhone Safari, go to Settings > Safari and toggle on "Privacy-Preserving Ad Measurement." Then scroll down and tap "Clear History and Website Data" — you'll see an option that says "On App Exit." Toggle that on, and Safari will clear your cookies, history, and site data every time you close it.

On Android Chrome, open the app, tap the three-dot menu, go to Settings > Privacy and Security, and toggle on "Clear Cookies and Site Data" under the "Clear Browsing Data" section. Some versions of Chrome also have a "Clear Browsing Data" option that you can set to run automatically. On Firefox for Android, go to Settings > Privacy > Delete Browsing Data and toggle on "Delete Browsing Data on Quit" — Firefox will then clear cookies every time you close the app.

What happens when you clear cookies

When you clear cookies, you'll be logged out of most websites. The next time you visit Gmail, Facebook, your bank, or any other site that remembers you, you'll need to sign in again. This is normal and expected — the cookie that kept you logged in is gone, so the website doesn't recognize you anymore. You can always log back in, and if you want to stay logged in, you can choose not to clear cookies from that particular site.

Clearing cookies won't delete your account or any information stored on the website's servers. Your email, photos, messages, and account settings stay exactly where they are. You're only removing the file on your phone that the website uses to remember you between visits. If you have important passwords you don't want to re-enter, consider using a password manager like Bitwarden or 1Password, which stores your login information securely and can fill it in for you automatically.

Cookies versus other tracking methods

Clearing cookies removes one tracking tool, but websites and data brokers use others. Fingerprinting is a technique that identifies you based on your phone's settings, screen size, installed fonts, and browser version — clearing cookies won't stop it. Pixel tags (tiny invisible images embedded in websites and emails) track whether you opened an email or visited a page. Some apps track your location even when you're not using them, and social media platforms track your activity across other websites through buttons and plugins.

Clearing cookies is a useful step, but it's most effective as part of a broader approach. Turning off location tracking in your phone's settings, disabling third-party cookies in your browser, using a privacy-focused search engine like DuckDuckGo, and limiting what you share on social media all reduce how much of your behavior gets tracked and collected. None of these steps alone will stop all tracking, but together they make it much harder for data brokers to build a complete picture of your habits.

Frequently Asked Questions

Will clearing cookies delete my passwords?

No. Cookies and saved passwords are stored separately. If you've told your browser to save your password, it will stay saved even after you clear cookies. You'll be logged out, but when you visit the site again, your browser can offer to fill in your login information automatically. If you want to delete saved passwords, you have to do that separately in your browser's password settings.

Do I need to clear cookies on every device I use?

Yes. Cookies are stored on each individual device, so clearing them on your phone won't affect cookies on your laptop or tablet. If you want to reduce tracking across all your devices, you'll need to clear cookies on each one. You can also adjust privacy settings in your browser on each device to limit how many cookies are stored in the first place.

Can I clear cookies from just one website instead of all of them?

Yes, most browsers let you manage cookies by individual site. On iPhone Safari, go to Settings > Safari > Advanced > Website Data, and you'll see a list of sites with stored data. Swipe left on any site to delete just its cookies. On Android Chrome, go to Settings > Privacy and Security > Cookies and Site Permissions, and you can block or clear data for specific websites.

What's the difference between clearing cookies and clearing cache?

Cookies are files that websites use to remember you. Cache is temporary copies of images, videos, and other files that your browser stores to load websites faster next time. Clearing cache frees up storage space on your phone but doesn't reduce tracking the way clearing cookies does. Most browsers let you clear them separately, though many options clear both at once.