What cookies are and why you might want to delete them

Cookies are small files that websites store on your computer to remember information about you — your login details, what you put in a shopping cart, your language preference, or sites you have visited. Your browser collects these files over time, and they take up storage space. Deleting them can free up disk space, speed up your browser slightly, and remove records of where you have been online.

You do not need special software to clear cookies. Every major browser — Chrome, Firefox, Safari, and Edge — has a built-in tool to delete them. The process takes less than a minute and you can choose to delete all cookies at once or only the ones from a specific date range.

Key Takeaways

  • Cookies are stored automatically by your browser and can be deleted through your browser's settings menu without any additional software.
  • On Chrome and Edge, go to Settings > Privacy and Security > Clear Browsing Data and select Cookies and Cached Images.
  • On Firefox, open Preferences > Privacy & Security > Cookies and Site Data and click Clear Data.
  • On Safari, go to History > Clear History and choose how far back you want to delete.
  • You can delete all cookies at once or set your browser to delete them automatically every time you close it.

How to clear cookies in Chrome

Open Chrome and click the three vertical dots in the top right corner. Select Settings from the menu. On the left side, click Privacy and Security, then click Clear Browsing Data.

A window will pop up. At the top, you will see a dropdown that says "All time" — this controls how far back the deletion goes. Leave it on All time to delete everything, or choose a specific range like Last hour, Last 24 hours, Last 7 days, Last 4 weeks, or Last 4 weeks. Below that, make sure the box next to Cookies and Other Site Data is checked. You can also check Cached Images and Files if you want to free up more space. Click Clear Data.

How to clear cookies in Firefox

Open Firefox and click the three horizontal lines in the top right corner. Select Settings. On the left side, click Privacy & Security. Scroll down to the Cookies and Site Data section.

Click the Clear Data button. A window will appear. Make sure Cookies and Site Data is checked. You can also check Cached Web Content to delete temporary files. Click Clear. If you want to delete cookies from only a specific time period, click the dropdown next to "Time range to clear" and choose Last Hour, Last 2 Hours, Last 4 Hours, Today, or Everything.

How to clear cookies in Safari

Open Safari. At the top of the screen, click History. At the bottom of the menu, click Clear History. A dropdown will appear asking how far back you want to delete — choose the last hour, today, today and yesterday, or all history.

Safari does not give you a separate option to delete only cookies without deleting browsing history, so clearing history will remove both. If you want more control, you can go to Safari > Settings > Privacy and click Manage Website Data to see which sites have stored cookies, then select specific ones and click Remove.

How to clear cookies 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 Choose What to Clear.

A window will pop up. At the top, select the time range from the dropdown — All time, Last hour, Last 24 hours, Last 7 days, Last 4 weeks, or Last time browsing. Check the box next to Cookies and Other Site Data. You can also check Cached Images and Files. Click Clear Now.

Set your browser to delete cookies automatically

If you want your browser to delete cookies every time you close it, you can turn on this setting instead of clearing them manually. In Chrome, go to Settings > Privacy and Security > Clear Cookies and Site Data When You Quit Chrome and toggle it on. In Firefox, go to Settings > Privacy & Security > Cookies and Site Data and check the box next to Delete Cookies and Site Data When Firefox Is Closed.

In Safari, go to Settings > Privacy and uncheck Allow Cross-Site Tracking, which limits how much data sites can collect. Safari does not have an automatic delete-on-close option for cookies, but you can manually clear them using the History menu whenever you want. In Edge, go to Settings > Privacy, Search, and Services and toggle on Clear Browsing Data under Clear Browsing Data.

What happens after you delete cookies

After you clear cookies, you may notice that websites no longer remember you. You will have to log back into email, social media, and shopping sites. Some sites may load slightly faster because your browser is not reading old cookie files. Your browsing history will not be affected unless you also deleted that separately.

Deleting cookies does not remove viruses, malware, or spyware — it only removes the small preference and login files that websites store. If you are concerned about security, clearing cookies is a good routine step, but it is not a substitute for antivirus software or keeping your operating system updated.

Frequently Asked Questions

Will deleting cookies slow down my computer?

No. Deleting cookies may actually make your browser slightly faster because it has fewer files to read. The amount of space cookies take up is usually very small — typically a few megabytes at most — so the impact on overall computer speed is minimal.

Do I need to delete cookies regularly?

Not unless you want to. Cookies do not harm your computer and do not take up significant space. You might delete them for privacy reasons or if a website is not working correctly, but there is no technical reason to do it on a schedule.

What is the difference between cookies and cache?

Cookies are small files that store login information and preferences. Cache is a collection of images, scripts, and other files that websites use, stored so they load faster on your next visit. Both can be deleted through your browser settings, and deleting cache frees up more disk space than deleting cookies alone.

If I delete cookies, will websites know I was there?

Deleting cookies removes the files from your computer, but it does not erase records that websites themselves keep on their servers. Websites can still see that someone visited from your IP address. Deleting cookies only removes the data stored on your device.

Can I delete cookies from just one website?

Yes. In Chrome, Firefox, and Edge, you can go to Settings > Privacy and look for an option to manage site data or cookies. You will see a list of websites and can delete cookies from individual sites without clearing everything. In Safari, go to Settings > Privacy > Manage Website Data to do the same.