What cookies are and why you might want to clear them

Cookies are small files that websites store on your computer to remember information about you. When you visit a site, it can save a cookie that tracks what you looked at, keeps you logged in, or remembers your preferences. Most cookies are harmless — they make websites work better by remembering your shopping cart or your language choice.

You might want to clear cookies if a website is acting strangely, if you want to remove login information before handing your device to someone else, or if you straightforward want to delete old data you no longer need. Clearing cookies does not damage your computer or browser. The worst that happens is you'll need to log back into websites and they'll forget your preferences until you visit them again.

Key Takeaways

  • Cookies are small files websites store on your device to remember information about you, and clearing them is safe and reversible.
  • The steps to clear cookies differ depending on whether you use Chrome, Firefox, Safari, or Edge, but all browsers have this option in their settings.
  • You can clear all cookies at once or choose a date range — for example, clearing only cookies from the last week or month.
  • After clearing cookies, you will need to log back into websites and they will not remember your preferences until you visit them again.

Clearing cookies in Google Chrome

Open Chrome and look for the three vertical dots in the top right corner. Click those dots, then scroll down and click "Settings." On the left side, click "Privacy and security," then click "Clear browsing data." A window will pop up.

At the top of that window, you'll see a dropdown menu that says "All time" or shows a date range. Click it and choose how far back you want to clear — "All time" removes all cookies, while "Last hour," "Last 24 hours," or "Last 7 days" removes only recent ones. Make sure the checkbox next to "Cookies and other site data" is checked, then click "Clear data." Chrome will remove the cookies and close the window.

Clearing cookies in Mozilla Firefox

Open Firefox and click the three horizontal lines (called a hamburger menu) in the top right corner. Click "Settings," then click "Privacy & Security" on the left side. Scroll down until you see "Cookies and Site Data" with a button that says "Clear Data."

Click "Clear Data." A small window appears with two checkboxes. Make sure "Cookies and Site Data" is checked, then click "Clear." If you want to clear cookies from only a specific time period instead of all of them, click the three dots next to the "Clear Data" button and choose "Clear Recent History" instead — that option lets you pick a date range before clearing.

Clearing cookies in Safari

Open Safari and click "Safari" in the menu bar at the very top of your screen (not in the browser window, but at the top of your Mac). Click "Settings" or "Preferences" depending on your macOS version. Click the "Privacy" tab.

You'll see a button that says "Manage Website Data" or "Remove All Website Data." If you want to remove all cookies at once, click "Remove All." If you want to remove cookies from specific websites only, click "Manage Website Data," find the site in the list, click it, and then click "Remove." Close the settings window when you're done.

Clearing cookies in Microsoft Edge

Open Edge and click the three dots in the top right corner. Click "Settings," then click "Privacy, search, and services" on the left side. Under "Clear browsing data," click "Choose what to clear."

A window will open. At the top, select your time range using the dropdown — "All time" clears everything, or you can choose a specific period. Make sure "Cookies and other site data" is checked, then click "Clear now." Edge will remove the cookies and the window will close.

What happens after you clear cookies

Once you clear cookies, websites will no longer remember you. The next time you visit a site where you were logged in, you'll need to enter your username and password again. Sites won't remember your preferences, your shopping cart, or anything else they stored in cookies.

This is temporary. As soon as you visit websites again, they will start storing new cookies on your device. If you log back in and check a "remember me" box, the site will create a new cookie to keep you logged in. There's no lasting effect — clearing cookies is something you can do as often as you want without any risk.

Clearing cookies from a single website instead of all at once

If you only want to remove cookies from one specific site, most browsers let you do that without clearing everything. In Chrome, go to Settings, click "Privacy and security," then click "Cookies and other site data." You'll see a list of sites. Find the one you want, click it, and click "Remove." In Firefox, go to Settings, click "Privacy & Security," click "Manage Data" under Cookies and Site Data, find the site, and click "Remove Selected." Safari and Edge work similarly — look for the option to manage individual sites rather than clearing all at once.

This approach is useful if you want to log out of one website without affecting your login status everywhere else. It's also helpful if a single site is misbehaving and you suspect its cookie is the problem.

Frequently Asked Questions

Will clearing cookies delete my passwords?

No. Cookies and saved passwords are stored separately. Clearing cookies will log you out of websites, but your saved passwords will remain. You can log back in using those saved passwords. If you want to delete saved passwords too, that's a separate option in your browser settings.

Do I need to clear cookies regularly?

No. Clearing cookies is optional and only necessary if a website isn't working right, if you want to remove login information, or if you prefer not to store that data. Most people don't need to clear cookies at all — browsers manage them automatically and they don't slow down your device.

What's the difference between clearing cookies and clearing browsing history?

Browsing history is the list of websites you've visited. Cookies are files websites store on your device. Clearing history removes the list of sites you went to, while clearing cookies removes the data those sites stored. You can clear one without clearing the other — they're separate options in your browser settings.

Will clearing cookies speed up my browser?

Probably not noticeably. Cookies are very small files and don't take up much space or processing power. If your browser is slow, clearing cookies might help in rare cases where a corrupted cookie is causing problems, but usually the issue is something else. Restarting your browser or closing unused tabs is more likely to help.