The fastest way to stop seeing ads
The simplest way to block ads is to install an ad blocker extension in your browser. An extension is a small program that runs inside your browser and filters out advertisements before they load on the page. Most ad blockers work the same way: they recognize ad code, prevent it from loading, and show you the page without those ads.
The most widely used ad blockers are uBlock Origin (free), Adblock Plus (free), and AdGuard (free version available). All three work on Chrome, Firefox, Safari, and Edge. You install one from your browser's extension store, and it starts blocking ads immediately on almost every website you visit.
If you do not want to install anything, your browser itself has a built-in option: a Do Not Track setting that asks websites not to show you targeted ads. This is weaker than an ad blocker — websites can ignore it — but it takes 30 seconds to turn on and requires no installation.
Key Takeaways
- Ad blocker extensions like uBlock Origin and Adblock Plus stop ads from loading before you see them, and work on all major browsers.
- Installing an extension takes two minutes: find it in your browser's extension store, click Add, and it works immediately.
- Some websites detect ad blockers and ask you to turn them off or pay for ad-free access; you can whitelist specific sites if you want to support them.
- Your browser's built-in Do Not Track setting asks websites not to show targeted ads, but websites can ignore this request.
- Ad blockers may slow down very old computers slightly, and some websites will not load properly if you block all scripts, not just ads.
Installing an ad blocker extension
Start by opening your browser and going to its extension store. In Chrome, click the three-dot menu in the top right, select "Extensions," then "Open Chrome Web Store." In Firefox, click the menu button (three horizontal lines), select "Add-ons," then search in the Firefox Add-ons store. In Safari, go to Safari menu > Preferences > Extensions, then click "Get Extensions." In Edge, click the three-dot menu, select "Extensions," then "Open Microsoft Edge Add-ons."
Search for "uBlock Origin" (the most popular choice) or "Adblock Plus." Click the extension name, then click the blue "Add" or "Install" button. Your browser will ask for permission to run on websites — click "Add Extension" or "Allow." The extension icon will appear in your toolbar, usually in the top right corner. That is it. Ads will stop loading on almost every website you visit from that moment on.
If you want to turn off the ad blocker on a specific website — for example, to support a creator you like — click the extension icon and toggle it off for that site. The next time you visit, ads will load normally. You can turn it back on the same way.
What happens when a website detects your ad blocker
Some websites know you are using an ad blocker and will ask you to turn it off or pay for ad-free access. News sites, streaming services, and video platforms do this most often. When this happens, you have three choices: turn off the ad blocker for that site, pay for the premium version, or leave the site.
Most ad blockers have a setting to hide these messages, but the website may still refuse to load content. If a site is important to you and you want to support it, turning off the blocker for that site is the fairest option — the creators depend on ad revenue. If you do not want to see ads there, paying for ad-free access is the alternative.
Some websites will load partially even with an ad blocker on. This usually means the blocker is also filtering out scripts that run the page itself, not just ads. You can adjust this in your ad blocker settings, but it requires some technical knowledge. For most people, the default settings work fine.
Using your browser's built-in privacy settings
If you do not want to install an extension, you can turn on Do Not Track in your browser settings. This tells websites you do not want to see targeted ads based on your browsing history. Websites are not required to honor this request, but many do.
In Chrome, click the three-dot menu, go to Settings, then Privacy and Security, and toggle on "Do Not Track." In Firefox, click the menu button, select Settings, go to Privacy & Security, and check "Only when I choose to" under Do Not Track. In Safari, go to Safari menu > Preferences > Privacy, and check "Ask websites not to track me." In Edge, click the three-dot menu, select Settings, go to Privacy, Search, and Services, and toggle on "Tracking prevention."
Do Not Track is gentler than an ad blocker — it does not stop ads from loading, just asks websites not to target them to you personally. You will still see ads, but they will be less tailored to your interests. This is a good middle ground if you want some privacy without blocking all ads.
Blocking ads on mobile devices
Mobile browsers work differently than desktop browsers, and most do not support extensions the same way. On iPhone and iPad, Safari does not allow traditional ad blockers, but you can enable "Limit Ad Tracking" in Settings > Privacy > Tracking. This tells apps and websites not to track you for ads, though it does not block ads themselves.
On Android phones, Chrome does not support most ad blocker extensions, but Firefox for Android does. You can install uBlock Origin or Adblock Plus in Firefox Mobile the same way you would on desktop. Alternatively, you can use a different browser like Brave, which has built-in ad blocking and does not require an extension.
If you use a mobile device most of the time, Brave browser is worth trying. It blocks ads and trackers by default, loads pages faster, and works on both iPhone and Android. You can switch to it without installing anything extra.
How ad blockers affect your computer and websites
Ad blockers use a small amount of memory and processing power, but on modern computers this is barely noticeable. On very old computers (more than 10 years old), you might see a slight slowdown, especially if you have multiple extensions running. If your computer is slow, disabling the ad blocker temporarily can help you figure out if it is the cause.
Some websites load slowly or incorrectly with an ad blocker on because the blocker is filtering out more than just ads — it may be blocking scripts that run the page itself. If a website does not work properly, try turning off the ad blocker for that site. Most ad blockers have a whitelist feature that lets you do this with one click.
Ad blockers do not damage your computer or browser. They are safe to install and remove. If you want to uninstall one, go back to your browser's extension store, find the ad blocker, and click "Remove" or "Uninstall." It will be gone immediately.
Frequently Asked Questions
Will an ad blocker slow down my internet speed?
No. Ad blockers do not affect your internet connection speed — they just prevent ads from loading once they reach your computer. Pages may load slightly faster because the browser is not downloading ad files, but your internet speed itself does not change. If your internet feels slow, the problem is your connection, not the ad blocker.
Can websites tell I am using an ad blocker?
Yes, many websites can detect ad blockers. Some will ask you to turn it off or pay for ad-free access. Others will load normally but show you a message. A few will refuse to load content at all. If this happens, you can turn off the blocker for that site, pay for the premium version, or use a different website.
Is it legal to use an ad blocker?
Yes, ad blockers are legal in almost all countries. Websites can ask you to turn them off or refuse to serve content to users with blockers on, but they cannot punish you for using one. Some creators argue that ad blockers hurt their income, which is fair — if you like a site, consider turning off the blocker for it.
What is the difference between uBlock Origin and Adblock Plus?
Both block ads effectively. uBlock Origin is lighter on memory and faster. Adblock Plus is easier for beginners because it requires less setup. Both are free. Try uBlock Origin first; if you prefer something simpler, switch to Adblock Plus. You can only run one ad blocker at a time, so uninstall the first before installing the second.
Do I need an ad blocker if I use private browsing mode?
No. Private browsing mode (Incognito in Chrome, Private Window in Firefox) stops websites from tracking you and storing cookies, which reduces targeted ads. But it does not block ads themselves — you will still see them. An ad blocker blocks ads; private mode blocks tracking. You can use both together for maximum privacy.