How to Block Cookies in Your Browser

Change your browser settings to block third-party cookies from tracking your activity across websites.

Steps

1
Open your browser settings menu.
Click the three dots in Chrome or the hamburger menu in Firefox. On Safari, go to the Safari menu.
2
Find the privacy or security section.
Look for "Privacy and Security" in Chrome or "Privacy" in Safari and Firefox.
3
Look for the cookie settings option.
It may be called "Cookies and other site data" or "Cookie blocking" depending on your browser.
4
Select "Block third-party cookies" from the options.
This stops advertisers from tracking you across different websites while keeping useful cookies working.
5
Close the settings tab to save your changes.
Your browser saves the cookie preferences automatically when you exit settings.

What are cookies on a website?Show

Cookies are small files websites save on your computer. They remember your login status, preferences, and browsing activity.

Will blocking cookies stop all ads?Show

Blocking cookies stops targeted ads based on your browsing history. You will still see ads, but they will be less personalized.

Do I need to block cookies on every device?Show

Yes, cookie settings are per browser and per device. You need to change the settings on your phone, tablet, and computer separately.

Written by the HowToDoStuff.online editorial team. Last updated May 18, 2026.