The Best Ad Blockers for Firefox 2023

Don’t let ads fire you up. Instead, get one of our recommended ad blockers for Firefox.
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Best for Blocking Ads on Mobile

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On Total Adblock's website

  • Hands-off ad-blocking experience
  • Easy to set up
  • Free version excludes top 15,000 websites

Best Unique Add-Ons

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On uBlock Origin's website

  • Free and open-source
  • Compatible with multiple browsers
  • Some features require technical knowledge

Best for Blocking All Types of Ads

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On AdBlocker Ultimate's website

  • Blocks YouTube ads
  • Doesn't accept payments from advertisers
  • Lack of customer service options

Best for Blocking Trackers

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On Ghostery's website

  • Regularly updated list of blocked trackers
  • Comprehensive free version
  • Not available on Chrome for Android (only Firefox for Android)

Do you find online ads intrusive or worry about advertisers collecting your personal data? You are not alone! A 2021 Blockthrough report stated that 67% of individuals believe web advertising quality has either stayed the same or declined in recent years, with mobile ad blocking now encompassing 586 million users.[1]

Ad-blocking services are more popular than ever, and it’s important to use ad-blocking software combined with a web browser that you trust. We’ve tested some of the most popular ad-blocking services on the trusted Mozilla Firefox browser. Total Adblock, AdBlocker Ultimate, and uBlock Origin lead the way with their unique features and ability to bypass unwanted ads.

In this article
The best ad blockers for Firefox 2023
Total Adblock: Best for mobile ads
uBlock Origin: Best unique features
AdBlocker Ultimate: Best for blocking all types of ads
Ghostery: Best for blocking trackers
Ad blockers that didn’t make the cut
Best ad blockers for Firefox FAQs
Bottom line
How we tested the best ad blockers for Firefox

The best ad blockers for Firefox 2023

Top 4 ad blockers for Firefox, compared

Ad blocker
Total Adblock

uBlock Origin

AdBlocker Ultimate

Ghostery
Compatibility Chrome, Microsoft Edge, Firefox, iOS, Android Chrome, Chromium, Microsoft Edge, Opera, Firefox, Safari (releases before 13) Chrome, Firefox, Opera, Microsoft Edge, iPhone, iPad, macOS, Windows Android, Chrome, Firefox, Microsoft Edge, Opera, Safari
Blocks ads
Blocks trackers
Blocks malicious sites
Additional features Allows you to whitelist certain ads and manage trusted websites Includes add-ons for blocking cookies, social media, and more Doesn't allow advertisers to whitelist ads Operates the largest database of trackers and blocks them
Learn More Get Total Adblock Get uBlock Origin Get AdBlocker Ultimate Get Ghostery

Total Adblock: Best for blocking mobile ads

Total Adblock Keeps iPhones and Androids Both Ad Free
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On Total Adblock's website

  • Hands-off ad-blocking experience
  • Easy to set up
  • Free version excludes top 15,000 websites

Total Adblock is made by the same company that makes TotalAV antivirus, so you can be sure this ad blocker has cybersecurity chops. While testing it, we found it extremely easy to set up and really enjoyed the fact that we didn't have to manage any settings to block ads.

Total Adblock's browser extension makes it easy to see how many ads it's blocked as well as toggle it on and off.

What we liked

Total Adblock scored highly when we tested it on AdBlock Tester and Cover Your Tracks, two sites intended to check if an ad blocker successfully blocks ads and trackers. This is important especially if you choose to pay for an ad blocker — no one wants to pay for something that doesn't work.

Needless to say, Total Adblock cleared out those annoying ads. The paid version also blocks browser notifications and comes with antivirus protection, two bonuses that help keep your online adventures secure and annoyance-free.

Total Adblock also offers options to clear your browser history, junk images and files, and your download history.

We also like that Total Adblock has iOS and Android apps ready to go for your cell phone, which can help protect your device even more than a browser extension.

What we didn’t like

We wish Total Adblock's paid plan wasn't so expensive. The price starts at about $30 for your first year using it. After that, you can expect to pay a little over $100 each year.

Keep in mind this high price might be worth it if you don't already have antivirus protection installed. Antivirus software is necessary for all devices, and you'll get access to the TotalAV security suite features if you pay for Total Adblock.

Total Adblock pros and cons

Pros
  • User-friendly setup and design
  • Hands-off ad blocking works in the background
Cons
  • Free version is fairly limited

Get Total Adblock | Read Our Total Adblock Review

uBlock Origin: Best for unique features

We're Smitten with uBlock Origin's Custom Features
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On uBlock Origin's website

  • Free and open-source
  • Compatible with multiple browsers
  • Some features require technical knowledge

uBlock Origin is available on a variety of browsers and offers the most customizable features of any other brand we tested. Along with the basic services of blocking ads, trackers, and malicious URLs, this ad blocker includes several more customizable features that may keep you safe during your web browsing.

Firefox’s website for the uBlock Origin extension calls it “a wide-spectrum content blocker with CPU and memory efficiency as a primary feature.”

Related to the company’s mantra, a user’s personal study on GitHub highlighted that uBlock Origin uses less computer memory than some of the leading brands.[2] The benefits of reducing memory consumption include speed and page stability, so you can use this ad blocker without worrying about sacrificing your PC’s memory data.

uBlock Origin Chrome extension plug-in.

uBlock Origin Chrome extension plug-in.

What we liked

uBlock Origin scored 100% on all data points during our testing, including blocking the following items: contextual advertising (i.e., delivery of personalized, targeted ads), banner ads, error-monitoring feedback, invisible trackers, and more.

uBlock Origin's AdBlock Tester results for banner advertising.

Additionally, uBlock Origin is unique in its ability to block coin mining scripts, which can steal computer resources and mine cryptocurrency. Companies or individuals could try to use your computer resources to generate revenues for themselves without your knowledge. But don’t worry! This platform automatically blocks coin miners from your personal computer.

We also liked that the extension offers a multitude of filter lists that you can enable or disable within your settings. These lists are additional options beyond their default settings, such as:

  • EasyList Cookie: This tool helps block third-party cookies from tracking your whereabouts online. Cookies can lead to privacy issues and allow targeted ads to follow you around within your internet browsing.
  • Fanboy Annoyances: The Fanboy Annoyance List is coded to block pop-ups, certain social media content, and other annoying objects that may pop up during your browsing session.
  • AdGuard Annoyances: You can add the AdGuard Annoyances feature to further block cookie notifications, pop-up subscription notifications, and more.
  • Dan Pollock’s hosts file: This hosts file is open-source software that will stop your PC from connecting to certain internet hosts. The software creator claims it can protect you from spyware and pop-up traps, prevent further tracking, and reduce bandwidth use.

What we didn’t like

uBlock Origin released its JavaScript blocking feature in September 2018, taking the extension a step forward in blocking Javascript that can hide malware or attempt exploits. While this was a positive step for the organization, some recent user reviews from the Firefox browser extension showed concern about the feature automatically blocking certain websites.

A bad user review for uBlock Origin.

One user complained that they couldn’t see anything on their webpage; uBlock Origin’s developer later responded that the issue was fixed. Although there is no perfect ad blocker when it comes to blocking JavaScripts, it made us feel a bit more comfortable that the developer addressed this issue by fixing it in GitHub and responding directly to the review.

A bad review for uBlock Origin along with a comment back from the developer.

Another potential misstep for uBlock Origin is the lack of a support website or contact form for user issues. After searching its main webpage, we found that you can reach them through an email address at the bottom of the page that will populate if you click “get in touch.”

uBlock Origin pros and cons

Pros
  • Software doesn’t use as much PC memory
  • Offers customizable add-on features
Cons
  • Scripting block feature may block content from wanted websites
  • No support website

Get uBlock Origin | Read Our uBlock Origin Review

AdBlocker Ultimate: Best for blocking all types of ads

AdBlocker Ultimate Doesn't Give In to Advertisers
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On AdBlocker Ultimate's website

  • Blocks YouTube ads
  • Doesn't accept payments from advertisers
  • Lack of customer service options

AdBlocker Ultimate lived up to its 4.8 out of 5 stars for Firefox, as it scored 100/100 with AdBlock Tester. Not only does the ad blocker come with standard ad-blocking services, but the organization guarantees a zero whitelist policy. 

This means that they do not have a list of advertisers that pay them to bypass their ad blocker, which is something some open-source software platforms do for revenue. (The irony of an ad-blocking service being paid to promote ads did not pass us by!)

AdBlocker Ultimate blocked most ads on Forbes.com.

What we liked

We performed a full spectrum of testing on AdBlocker Ultimate, beginning with testing it on AdBlock Tester (a site just for examining ad pop-ups). We also verified that YouTube ads were turned off, a main reason individuals utilize ad-blocking services in the first place.

Finally, we tested AdBlocker Ultimate to see if it blocks trackers. Trackers are scripts that aggregate your personal data and actions online and send that information to third-party companies. The data creates your “digital fingerprint” (i.e., unique characteristics in connection with your browser and PC setup). AdBlocker Ultimate passed all three of these tests.

AdBlocker Ultimate's Cover Your Tracks score.

Moreover, the company assures users that it blocks the following ads in the Firefox browser:

  • Text ads
  • Banner ads
  • Pop-up ads
  • Pop-under ads
  • Overlay ads
  • Interstitial page ads
  • Video ads
  • Webmail ads
  • Facebook ads

Ad-blocking services prevent advertisers from making revenues, with one study estimating advertisers lost out on $12 billion in revenue in 2020.[3] AdBlocker Ultimate is not taking advantage of this revenue loss, citing that they do not allow advertisers to pay them to bypass their software’s restrictions. Although the company’s policy is to not offer whitelists to advertisers, you can still adjust your settings to receive ads from certain websites.

What we didn’t like

We had a question for AdBlocker Ultimate’s support team and had to submit a ticket through their website. Live chat support would be nice, but we also understand that many of its users are opting for a free ad blocker. At the time of this writing, we still have not received a response to our inquiry.

Another aspect we found a bit daunting was its promotion of free services for customers who provide positive feedback. While organizations should always welcome customer feedback, they should attempt to remain neutral by not offering free subscriptions for providing feedback (to keep social media reviews unbiased).

AdBlocker Ultimate: pros and cons

Pros
  • Blocks YouTube ads
  • Doesn't accept payments from advertisers
Cons
  • Lack of customer service options
  • Possibly biased reviews

Get AdBlocker Ultimate

Ghostery: Best for blocking trackers

Ghostery Lets You Ghost Ads and Trackers
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On Ghostery's website

  • Regularly updated list of blocked trackers
  • Comprehensive free version
  • Not available on Chrome for Android (only Firefox for Android)

Ghostery is the final ad blocker on our list, as it also passed our testing and has some unique features. Ghostery claims to have had over 100 million downloads around the world, combined with 1.1 million users utilizing the service on the Firefox browser alone. Ghostery seems top-notch when it comes to its proprietary tracking database and methodologies used for protecting your web browsing experience.

The Ghostery ad blocker statistics in simple view.

What we liked

Along with standard ad-blocking capabilities, Ghostery really excels at stopping trackers. The extension says its capabilities are “...different than opting-out or blocking cookies within the browser because those strategies still allow the browser to communicate with the web server (they just try to alter the communication or the response).”

Ghostery owns and utilizes the largest database of trackers in the industry, keeping its own library of 5,000 trackers from over 3,000 companies and updating it regularly.

Another unparalleled feature is the information they offer users regarding website trackers. Not only can users preview trackers on search engine result screens, but they can also view tracker information for any website they wish to visit. The ad blocker lets users see the number of trackers, the specific type of tracker, and the company that owns the tracker.

Ghostery's settings were easy to find and adjust to block certain types of ads.

If you would like to opt into ads or trackers for certain sites, you can do so on a one-by-one basis.

What we didn’t like

Ghostery used to be owned by Evidon, a U.S. company that provides business solutions. While the Ghostery website states that it no longer shares any information with its new owner, there was a time when Evidon did sell data from Ghostery users to third-party companies.

It seems that some of the extension’s reviewers are still reeling from the poor reputation, commenting on their lack of trust in the organization within the Firefox reviews. One user stated, “You have to agree to send your personally not identifiable data and accept the privacy policy.”

A bad user review for Ghostery.

A bad user review for Ghostery.

Although Ghostery is open-source, the publicity and additional reputation of being owned by a larger company could be a factor to think about before selecting it as your ad blocker.

Ghostery: Best for tracking visibility

Pros
  • Proprietary tracking database
  • Customizable tracking features
Cons
  • Asks users to share anonymous data
  • Lack of customer service options

Get Ghostery | Read Our Ghostery Review

Ad blockers that didn’t make the cut

A 2021 survey of 5,000 internet users highlighted that a majority of individuals surveyed used either AdBlock or Adblock Plus as their ad blocker. Coming in second in popularity for the test group was AdGuard.[3] You may be wondering why these well-known ad blockers didn’t make the cut. Keep reading to find out.

Adblock Plus

Adblock Plus states that it blocks all ads by default, including YouTube ads. You can also customize which sites allow ads and view how many ads you’ve blocked.

During our testing, Adblock Plus failed to block banner ads and error monitoring from websites. Beyond banner ads feeling intrusive, they could potentially make webpages load slower. Webpages that track error monitoring can also slow your browsing experience.

Another major reason Adblock Plus didn’t make it into our best ad blockers for Firefox list was that it actually runs its own ad network and sells ads. This platform runs a list of “acceptable ads” and whitelists certain advertisements — all while you’re using the ad-blocking service! Furthermore, our previous Adblock Plus review discovered that the platform charges users to block certain items like pop-up videos and site notifications.

AdGuard

AdGuard blocks ads and trackers and provides many filter options to create a seamless and safe browsing experience. It offers custom filters in several languages, so you can block unwanted ads from websites worldwide.

This software has a filter specifically for social media, which is a great idea since cybercriminals love to use social media as an exploitative resource. Yet, multiple one-star reviews on Firefox’s review pages highlighted that the ad blocker sometimes didn’t work at all, even with the social media filter added.

Our AdGuard review confirmed this issue, finding that people using different browsers simultaneously had to add the extension for each separate browser.

Best ad blockers for Firefox FAQs


+

Does Firefox have a built-in ad blocker?

Firefox does not offer a built-in ad-blocking service, but it does have several ad-blocking extensions to choose from and download. Visit the Firefox Browser Add-ons page, search for ad blockers, then sort ad blocker options with filters like “Top Rated” or “Most Users.”


+

How do I turn off an ad blocker on Firefox?

Follow these instructions to turn off an ad blocker (or any other Firefox add-on):

  1. Open the Mozilla Firefox browser.
  2. Select the three lines in the upper-right part of your screen.
  3. Click Settings > Extensions and themes.
  4. Under “Manage your extensions,” turn your ad blocker off by moving the button to the off position.

+

Can you block Twitch ads on Firefox?

If you want to use ad blocking for Twitch on Firefox, the free version of Adblock Plus lets you enable this filter. uBlock Origin, one of our top-rated Firefox ad blockers, used to block ads on Twitch but no longer offers this feature. Read our article on the best ad blockers for Twitch for more options.


+

Can you block YouTube ads on Firefox?

After undergoing testing, we can confirm that all ad blockers mentioned in this article can block those pesky YouTube ads.

Bottom line

Our top four best ad blockers for Firefox — Total Adblock, uBlock Origin, AdBlocker Ultimate, and Ghostery — all blocked ads, trackers, and potential malware. All four passed our hands-on tests while browsing the web and with AdBlock Tester and Cover Your Tracks.

4 best ad blockers for Firefox 2023

Best for Compatibility Learn More
Total Adblock Best for mobile ads Chrome, Microsoft Edge, Firefox, iOS, Android Get Total Adblock
Read Total Adblock Review
uBlock Origin Best unique add-ons Chrome, Chromium, Microsoft Edge, Opera, Firefox, Safari (releases before 13) Get uBlock Origin
Read uBlock Origin Review
AdBlocker Ultimate Best for blocking all types of ads Chrome, Firefox, Opera, Microsoft Edge, iPhone, iPad, macOS, Windows Get AdBlocker Ultimate
Ghostery Best for tracking visibility Android, Chrome, Firefox, Microsoft Edge, Opera, Safari Get Ghostery
Read Ghostery Review

How we tested the best ad blockers for Firefox

We tested the most important security components for each ad blocker before choosing our top three best ad blockers for Firefox. First, we tested the ad blockers through AdBlock Tester, a site that permits you to test your ad blocker against analytics and advertising services embedded within the testing website.

Next, we tested the ad blocker through Cover Your Tracks, a website that reveals how trackers view a browser. We used the site to test whether the ad blocker was truly blocking tracking ads and invisible trackers. Knowing how important it is for you to bypass social media and video ads, testing the ad blockers on YouTube was the third and final component of our testing process.

To ensure that each testing experience was unique, we fully disabled each ad blocker browser extension before enabling the next ad blocker on our list. Additionally, we made our top three selections because they had top scores in blocking ads, blocking trackers, and blocking ads that live on social media, among other factors.

Learn More
On Total Adblock's website

  • Hands-off ad-blocking experience
  • Easy to set up
  • Free version excludes top 15,000 websites
Author Details
Robin Moore is a freelance writer and editor specializing in blockchain technology, including wallet security and data privacy. She is the current Managing Editor for Watcher.Guru, a startup blockchain and finance news publication with 1.7 million followers on Twitter. Robin has also been the lead content editor with Genfinity.IO, another startup blockchain research publication. Before entering the Web3 space, she was a business analyst within the oil and gas industry. When she is not offering advice on the best ways to protect data privacy, she is hiking, doing yoga, or networking with her Web3 family on crypto-Twitter.

Citations

[1] 2021 PageFair Adblock Report

[2] Own Memory Usage: Benchmarks Over Time

[3] Your Guide to AdBlockers and Revenue Recovery