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Home / Tips and Tricks / How to Block Trackers in Firefox (Without Installing Add-ons)

How to Block Trackers in Firefox (Without Installing Add-ons)



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Websites track you online to show you targeted advertisements, and Firefox 65 is just the latest browser to help you opt out. You can now block tracking content online without the need for a third-party add-on.

What is Content Blocking in Firefox?

"Content blocking" is a collection of privacy settings designed to block trackers and cookies that affect your privacy and browsing performance online. This feature first appeared in Firefox 63 as "tracking protection," but it's been redesigned and is now named "content blocking."

By teaming up with disconnect, a company strives to give people the freedom to move about the internet without having To see if your information is collected and sold, Firefox can block a known trackers when browsing the internet. You can find a full list of trackers Disconnect does and doesn't block — along with explanations — on its website. Firefox lets you choose between three options to protect your privacy better online:

  • Standard: This is the default setting and only blocks known trackers in Private windows, allowing for a balance between protection and performance. Third-party tracking cookies are not blocked using this mode.
  • Strict: Blocks all known trackers and third-party tracking cookies in any windows, including regular sessions, that Firefox detects.
  • Custom: A mix between the standard and strict modes which allow you to gain complete control over trackers and cookies, and you can choose what you want to block

Warning: When you block all cookies, some websites that rely on them may not function as intended.

How to Enable Content Blocking

To find these settings, click Menu> Content Blocking in Firefox. You have not upgraded to Firefox 65 yet.

 Open Content Blocking settings

On the Firefox preferences privacy page, choose the option that's best suited for you

 Choose a Mode of Blocking Content

When choosing the Custom plan, there are two settings you can manually enable and set: Trackers and Cookies.

For trackers, you can block them in all windows or private windows only. For cookies, you can block third-party trackers, cookies from unvisited websites, all third-party cookies, or cookies.

 Custom settings options When you click on "Change Block List,

 Click here to change track list

Level 1 allows some trackers through, which maintains the functionality of some sites, and level 2 blocks all detected trackers, which may break websites or prevent content from loading. Click on a level and then click “Save Changes.”

 Select a Block List

You can also tell Firefox to send the “Do Not Track” signal to websites, but most websites ignore that anyway

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Content Blocking Shield ” width=”326″ height=”95″ src=”/pagespeed_static/1.JiBnMqyl6S.gif” onload=”pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);” onerror=”this.onerror=null;pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon(this);”/>

How to Turn Off Blocking for Individual Sites

As mentioned previously, blocking all trackers and cookies can lead to certain parts of a website misuse and potentially breaking.

Click the shield icon, then click “Turn off blocking for this site.”

 Add a Site as an Exception to Blocking Content

Afterward, the page reloads, and all trackers and cookies are allowed. The shield now has a strike through it, signaling that Content Blocking is disabled on the current website.

 Content Blocking Turned Off


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