Firefox has always been the perfect web browser for those who value privacy. While being the most popular option, Chrome locks you into the world’s largest advertiser ecosystem. Safari is exclusive to Apple products. However, Firefox is available on all platforms, and they don’t try to lock you into a specific ecosystem.
More importantly, Firefox does not restrict extensions (specifically ad blockers) from running as intended. This means all those ad blockers you can’t run on Chrome anymore probably work perfectly on Firefox. And we’re here to recommend our picks for the best 5 ad blockers for Firefox in 2025.
A Quick Comparison Between The Top 5 Best Ad Blockers for Firefox
| Ad Blocker | Adblock Tester Score | Starting Price | Where it Works | Why it’s the best? | Links |
| AdGuard | 100 | $39.99/year | Everywhere | Blocks everything | Get AdGuard |
| Surfshark Cleanweb | 98 | $47.85/year + 3 months | Everywhere | Best VPN ad blocker bundle | Get Surfshark |
| uBlock Origin | 98 | Free | Firefox & Edge | Customisability | Get uBlock Origin |
| Ghostery | 96 | Free | Chrome, Firefox & Safari | Best for privacy | Get 1Blocker |
| Adblock Plus | 96 | $40/year | Chrome, Firefox & Safari | Most reliable | Get Adblock Plus |
1. AdGuard – The Most Comprehensive
🏆 Adblock Tester Score: 100/100
💵 Starting Price: $39.99/year or $99.99 for a Lifetime License (Promo Code: ADBLOCKTESTER30 for 30% discount)
If you use Firefox, chances are you care about privacy and hate tracking. That’s why AdGuard is the best ad blocker for Firefox. It blocks ads, trackers, analytics, phishing attempts and even cookie pop-ups. If you want to browse the web without ads and without being followed by shady ad networks, AdGuard is the way to go.
Blocks Ads Everywhere
AdGuard takes ad blocking seriously. It eliminates all kinds of ads. What makes AdGuard stand out is that it blocks ads on multiple levels. Instead of hiding them like some basic blockers do, AdGuard stops them from loading in the first place. That means faster browsing, fewer distractions, and no wasted bandwidth.
Perfect for Privacy
The ideal ecosystem for Firefox users is that there is no ecosystem because they don’t want their online services to talk to each other. AdGuard fits right into that ecosystem. It prevents websites from tracking you by blocking tracking scripts, fingerprinting attempts and analytics tools like Google Analytics and Hotjar. It even removes tracking parameters from URLs, so when you click a link, advertisers can’t sneak data collection tags onto it.
Stops Ads Before They Load
Most ad blockers work inside your browser. Meaning they filter ads after they start loading. AdGuard is different. It offers DNS-level ad blocking which means ads never even get the chance to load. This makes browsing even faster and reduces the amount of data wasted on unwanted content.
Blocks YouTube Ads Without Breaking Videos
Ad blockers and YouTube have been playing cat and mouse for years. YouTube finds ways to force ads through, and ad blockers find ways to stop them. AdGuard is one of the best YouTube ad blockers out there, and it works without breaking video playback. Some blockers end up causing buffering issues or preventing videos from loading altogether. AdGuard removes ads while keeping everything functional. If you’re tired of 2-3 unskippable ads before every video, AdGuard is your best bet.
Phishing and Malware Protection Built-in
Not all ads are just annoying, some are plain dangerous. AdGuard doesn’t just block banner ads and video ads; it also filters out malicious ads that try to trick you into clicking on phishing links or download malware. If you ever saw “Your computer is infected! Click here to clean it” ad, you know what we are talking about. With AdGuard, you won’t see them.
Lightweight and Fast
Some ad blockers are resource hogs, making your browser slow. AdGuard is optimised to run fast, so you won’t feel any slowdown because it blocks ads at the DNS level and removes tracking scripts; pages load faster.
Easy to Use
You don’t need to be tech-savvy to use AdGuard. Installation is as simple as downloading the extension and once it’s up and running, it works automatically. If you would like to customise things, AdGuard has plenty of options. You can whitelist, reverse whitelist, add custom filters and rules, enable regional filters, block unwanted content, and much more.
Who is AdGuard for?
AdGuard is for Firefox users who care about privacy and security. If you’re tired of ads, concerned about tracking or just want a faster browsing experience, this is one of the best ad blockers you can install.
It’s especially great for:
- YouTube viewers who want ad-free videos without issues.
- Privacy-conscious users who don’t want to be tracked across the web.
- People who want an ad blocker that just works, with zero setup required.
2. Surfshark CleanWeb – The Best Ad Blocker + VPN Bundle
🏆 Adblock Tester Score: 100/100
💵 Starting Price: $15.45/month, $47.85/year, or $59.13/two years
Unlike standalone ad blockers, CleanWeb is part of Surfshark VPN. And it’s not just there sitting idle. It handles ad blocking, tracker removal, and anti-phishing protection. If you already use a VPN (or need one), CleanWeb gives you ad-free browsing while keeping your connection private.
Blocks Ads on Every Website, Including YouTube
Some ad blockers struggle with YouTube ads, forcing you to deal with buffering issues or pop-ups asking you to disable your blocker. CleanWeb doesn’t have that problem. It blocks pre-roll, mid-roll, and banner ads without disrupting video playback. And not just YouTube ads, though. News sites, blogs, and social media platforms are also free from annoying ads, autoplay banners, and sponsored content.
Built for Privacy
Ads aren’t just annoying; they’re a major privacy hazard. They’re designed to track you. Most ad blockers remove the visible parts but leave the tracking scripts running in the background. CleanWeb blocks both. It stops analytics tools like Google Analytics, Hotjar, and Facebook Pixel from collecting your data. This means no more personalised ads following you from site to site and no secret tracking pixels monitoring your activity.
Anti-Phishing Protection
Malicious ads can trick you into clicking on fake login pages, downloading malware, or exposing sensitive data. CleanWeb has built-in anti-phishing protection, which means it blocks access to known scam websites. If you accidentally click on a suspicious link, CleanWeb warns you before you land on the page. It’s not a full antivirus, but it’s an extra layer of security that comes in handy.
Faster Browsing
Web pages are full of ad scripts and those scripts eat up bandwidth and slow down loading times. CleanWeb removes those elements before they even load, so browsing feels faster and smoother. For mobile users, this means less data usage. If you have limited data, CleanWeb reduces the amount of unnecessary content your browser loads, so you save bandwidth for what matters.
Works with or Without a VPN
Most VPN-based ad blockers only work when the VPN is turned on. But with CleanWeb 2.0 you can block ads even when you’re not connected to a VPN server. This gives you flexibility. If you just want adblocking without encrypting your entire connection and potentially slowing it down a bit, the browser extension does the job.
Limited Customisation (But That’s the Point)
Some users like advanced control over their ad blocker. CleanWeb isn’t for them. Unlike uBlock Origin or AdGuard, it doesn’t have custom filter lists, script-blocking tools or manual element removal. CleanWeb is for users who just want an ad blocker that works. There are no settings to tweak or configurations to mess with.
Who is CleanWeb for?
CleanWeb is perfect for Firefox users who want an ad blocker bundled with their VPN. It’s great for:
- Users who already have a VPN and want adblocking included.
- People who want a simple, no-config ad blocker that just works.
- Users who don’t need advanced customisation but still want ads, trackers and phishing protection blocked.
3. uBlock Origin – The Most Customisable
🏆 Adblock Tester Score: 98/100
💵 Starting Price: Free
uBlock is one of my personal favourite ad blockers, but it doesn’t work on Chrome anymore because of the Manifest V3 platform update. But it’s one of the best ones out there. It has the most comprehensive list of filters and blocklists. And it’s completely free and open-source.
Blocks Everything, No Exceptions
Some ad blockers play nice with certain “acceptable ads”. Not uBlock Origin. It blocks everything unless you explicitly tell it not to. Banner ads, pop-ups, video ads, tracking scripts – you name it, uBlock Origin wipes it out. If you don’t want any ads to slip through, this is one of the best ad blockers you can install. uBlock also stops tracking scripts, blocks spyware domains and even protects against some forms of browser fingerprinting.
Perfect Score on AdBlock Tester
If you need proof of how well uBlock Origin works, just look at the numbers. It scored 100/100 on AdBlock Tester, meaning it blocked every ad, tracker and background script thrown at it. Many ad blockers struggle with certain ad formats. Especially the tricky, personalized ones that follow you across websites. But uBlock blocks them all. No pre-roll ads on YouTube, no sponsored posts on social media and no banner ads slowing down your favorite sites.
More Customizable Than Any Other Ad Blocker
For techy users, uBlock Origin is a dream come true. It’s a content blocker where you can:
- Manually block elements on any webpage.
- Create dynamic filtering rules to allow or block scripts based on your preferences.
- Enable or disable individual filter lists so you can fine-tune what gets blocked.
- With advanced script blocking options, you can control which scripts load on a webpage.
Dynamic Filtering
One of uBlock Origin’s coolest features is Dynamic Filtering. Unlike basic ad blockers that apply the same blocking rules everywhere, Dynamic Filtering lets you decide what gets blocked on a site-by-site basis. For example you can:
- Block third-party scripts while allowing first-party ones.
- Disable JavaScript on dodgy websites.
- Block large media files that slow down page loads.
Element Picker
Ever visit a website and think, “I hate that section”? uBlock Origin lets you remove anything from a webpage with Element Picker Mode. You can even permanently block those elements, so they never show up again.
Ultra Lightweight
Some ad blockers are heavy. They eat up RAM and CPU, making your browser sluggish. But uBlock Origin is one of the lightest ad blockers available. Because it’s optimized for efficiency, it actually reduces CPU and memory usage by blocking ads before they load. This means faster page loads on news sites, blogs, and video platforms.
100% Free
One of the best things about uBlock Origin? It’s completely free. There no “Pro” version, no hidden paywalls, and no subscription fees. It’s also open-source, meaning anyone can inspect the code. Unlike some ad blockers that sell user data or let certain ads through, uBlock doesn’t compromise. It’s a true privacy-first ad blocker.
Who is uBlock Origin for?
If you’re a Firefox user who wants full control, uBlock Origin is the one to install. It’s:
- For privacy-focused folks who don’t want to be tracked.
- For techies who want total customisation.
- For enthusiasts who need an ultra lightweight ad blocker.
4. Ghostery – The Best for Privacy
🏆 Adblock Tester Score: 96/100
💵 Starting Price: Free
Ghostery is built to protect your data from trackers, analytics and background scripts. It’s an ad blocker, tracker blocker, and privacy suite that are all in one, so it’s the top choice for Firefox users who want to be in control of their online footprint.
Blocks Ads and Trackers at the Same Time
Most ad blockers remove ads but don’t always stop the tracking scripts that are running in the background. Ghostery does both. It wipes out banner ads, video ads, and pop-ups and ensures advertisers can’t collect your browsing data. By default, Ghostery blocks thousands of tracking domains, so companies can’t build an ad profile for you.
Top Tier Ad Blocker
Ghostery scored 96/100 on AdBlock Tester, so it blocks ads and trackers on all major sites. The only issues were with Google Analytics and AdSense, where some test results were inconclusive. But Ghostery blocks Google ads in real-world testing, so it’s still a great choice for ad-free browsing. It also performed well on YouTube, social media and news sites, removing pre-roll video ads, autoplay banners and sponsored content.
WhoTracks.Me
Ever wonder who’s tracking you across the web? Ghostery’s WhoTracks.Me feature pulls back the curtain and shows you who’s trying to collect your data. Powered by an open-source database, WhoTracks.Me gives you real-time insights into the trackers on every site you visit. It even provides detailed reports on their behaviour so you can see how advertisers follow you from site to site.
Never-Consent
No one likes cookie consent pop-ups. Instead of manually rejecting them on every site, Ghostery’s Never-Consent does it for you. Whenever you visit a site with a GDPR or cookie consent pop-up, Ghostery automatically declines tracking cookies, so you don’t have to click “No” a hundred times daily. It’s a tiny but nice feature that makes browsing faster and less painful.
Search Engine Redirect Protection
Ever noticed when you click a Google search result, you’re sometimes redirected through a Google tracking URL before landing on the actual website? That’s search engine tracking in action. Google and other search engines use redirects to track what you click on and how long you stay. Ghostery stops this tracking entirely, so when you click a search result, you go straight to the website, no detours. This feature reduces your digital footprint and prevents search engines from adding more data to your ad profile.
Easy to Use
Ghostery is one of the easiest ad blockers to set up. Just install from the Firefox Add-ons Store and it starts blocking ads immediately.
The interface is simple and intuitive. There’s a visual dashboard that shows how many ads and trackers are blocked, one-click toggles for blocking specific scripts or elements, and simple whitelisting if you want to support specific sites.
Who is Ghostery for?
If you’re a Firefox user who cares about privacy, Ghostery is one of the best ad blockers you can install. It’s great for:
- Users who want ad-blocking and privacy in one.
- People who don’t want to be tracked.
- Anyone who wants a free, lightweight ad blocker that doesn’t slow down Firefox.
5. Adblock Plus – The Most Reliable
🏆 Adblock Tester Score: 96/100
💵 Starting Price: $4/month or $40/year
Adblock Plus has been around since 2006. It’s one of the OG Firefox ad blockers. It’s free, open-source, and easy to use. It still works well for many people and their specific ad-blocking needs.
Blocks Ads, But With a Catch
Adblock Plus does what it says on the tin. It blocks video ads, pop-ups and banners on most websites. It scored a perfect 100/100 on AdBlock Tester, so it passed all the tests. But by default Adblock Plus allows “acceptable ads”, which are supposed to be non-intrusive ads that meet certain criteria. The problem? Many users install an ad blocker to remove all ads, not just the annoying ones.
Luckily you can turn this off in the settings. If you do then Adblock Plus works just as well as other top ad blockers.
Basic Tracker Blocking
Adblock Plus does block some trackers but not as aggressively as other ad blockers. It comes with EasyPrivacy filters which stop some tracking scripts.It’s great at blocking Google Analytics and Facebook tracking. But it also lacks in blocking some advanced invisible trackers.
Element Blocking
One of Adblock Plus’s best features is element blocking. If you don’t like a part of a website, you can remove it permanently. It’s not as advanced as uBlock Origin’s dynamic filtering but for users who just want to tweak their browsing experience it’s a useful feature.
Easy to Use
One of Adblock Plus’ biggest strengths is how easy it is to install and use. It’s designed to be user-friendly so it’s perfect for people who just want an ad blocker without a learning curve.
Installation is simple, just download it from the Firefox Add-ons Store, and it starts working immediately. The interface is clean and simple, with basic toggles for ad-blocking and whitelisting. And if you need to allow ads on certain sites, it’s a one-click process.
Cross-Platform Support
Adblock Plus is available on all major browsers, including Firefox, Chrome, Edge, Safari, and Opera. However, it doesn’t block ads system-wide. While AdGuard has dedicated apps for Windows and macOS, Adblock Plus only works in your browser.
Who is Adblock Plus for?
Adblock Plus is for beginners. It’s easy to use, works straight away and requires no setup. It’s perfect for:
- Casual users who just want to block ads without messing with settings.
- People who don’t mind the “acceptable ads” program or can turn it off.
- Users who want a free, open-source ad blocker that’s been around for years.
Pricing Comparison – Which One Offers The Best Value?
If you’re wondering which one of our five picks gives you the best bang for your buck, here’s how the top Firefox ad blockers stack up.
So which one gives you the best bang for your buck? Here’s how our top Firefox ad blockers stack up.
AdGuard is the best option for users who want system-wide ad blocking. It’s the only ad blocker here that works outside the browser, blocking ads in apps, games and across your whole device. The lifetime plan at $99.99 is a one-time purchase for permanent ad-blocking and is hard to beat. And for Firefox users the browser extension is free and one of the most powerful free ad blockers out there.
uBlock Origin is fully free, forever, with no premium plan, no upsells, and no hidden costs. It’s open-source, community-maintained and the most customisable ad blocker out there. If you don’t want to spend money and still want full control over your ad blocking, uBlock Origin is the best free ad blocker for Firefox users.
Ghostery is another free option but it focuses more on tracker blocking and privacy protection rather than just ads. There’s no paywall for essential features and users can donate to support development. It’s perfect for users who want an ad blocker that also keeps trackers at bay. If privacy is your main concern, Ghostery is one of the best free options.
CleanWeb isn’t a standalone ad blocker; it’s part of Surfshark VPN. So you’re not just paying for ad blocking; you’re also getting a full VPN service with encrypted browsing, IP masking, and tracker blocking. If you already use a VPN or want one, Surfshark is one of the best deals. But if you only want an ad blocker, there are cheaper (or free) options.
Adblock Plus is free but has a premium plan that removes floating video ads and cookie banners. The free version is solid but allows “acceptable ads” by default which means some ads still get through unless you turn it off. The Premium version doesn’t offer enough extra value compared to what uBlock Origin and AdGuard offer for free. Unless you really want an easy to use ad blocker, the premium plan isn’t worth the money.
Which One Offers the Best Value?
It’s entirely based on your specific needs. However, being a completely free ad blocker, uBlock Origin offers a lot of features and customisability that no other ad blocker does. At the same time, AdGuard’s lifetime plan is unbeatable. Surfshark’s VPN + CleanWeb makes a lot of sense as a bundled package, too.
Wrapping Up
Firefox is the last major browser that still lets ad blockers work without restrictions. If you value privacy, control, and a better web using a good ad blocker is a no brainer. Whether you’re here to remove annoying ads, stop trackers or just speed up your browsing there’s an ad blocker on this list that’s for you.