Best VPN for Firefox in 2025: Fastest and Safest Browser Extensions for Mozilla Firefox
- Table of Contents
- The Best VPNs for Firefox
- 1. NordVPN -- Best VPN Overall With the Fastest Speeds
- 2. Surfshark -- Feature-Rich Firefox VPN
- 3. ExpressVPN -- Best Easy to Use Firefox VPN
- 4. Proton VPN -- Best Firefox VPN for Beginners
- 5. Private Internet Access -- Most Affordable Firefox VPN
- Why Use a VPN for Firefox Browser?
- How to Choose the Best VPNs for Firefox
- How to Set Up and Use a VPN Extension for Firefox
- Does Firefox Have a Built-In VPN?
- Best Paid & Free VPN Extensions for Firefox on Reddit
- Conclusion
- FAQ: Top VPN for Firefox
Quick Summary: Best VPN for Firefox
NordVPN is the best VPN extension for Firefox because it offers the fastest speeds, secure connections and a user-friendly GUI. Here’s my top five VPN suggestions for Firefox:
- NordVPN — Best VPN overall with the fastest speeds
- Surfshark — FIrefox VPN for multiple devices
- ExpressVPN — Feature-rich Firefox VPN
- Proton VPN — Best Firefox VPN for beginners
- Private Internet Access — An affordable Firefox VPN
Best VPN for Firefox — With a 30-day money-back guarantee, you can grab your subscription and get a full refund if it doesn’t work for you.
We all use browsers like Firefox to access the internet, but we rarely pay attention to what those browsers do for privacy and online security. Fortunately, most of the best VPNs cover that base by providing secure browser extensions. In my opinion, NordVPN is the best VPN for Firefox — I’ll explain why as I cover four alternatives that you can also use.
You may ask why you’d need a VPN browser extension when a VPN app offers system-wide protection. A VPN browser extension is easier to use, can be installed quickly and can encrypt browsing on Firefox only, giving you better performance. I’ll discuss all these benefits as I explore the five VPN services with the best Firefox browser extensions.
- Money-Back Guarantee30 DaysWorldwide Server AmountOver 5,400+ servers in 59 countries
- Money-Back Guarantee30 DaysWorldwide Server Amount1700+ Servers in 63 Countries
- Money-Back Guarantee30 DaysWorldwide Server AmountOver 3,000 servers in 105 countries
- Money-Back Guarantee30 DaysWorldwide Server Amount1500 Servers in 61 Countries
- Money-Back Guarantee30 DaysWorldwide Server Amount84 countries
The Best VPNs for Firefox
Below, I’ll list the five best Firefox VPN extensions and explain what makes them suited for this browser. Check the table for a quick summary.
| VPN: | OSes | Best Price | Speed | Features |
|---|---|---|---|---|
| NordVPN | Windows, macOS, Linux | $3.39/month for 24 months | 33.07 Mbps | -WebRTC safety -Split tunneling -Kill switch -Threat warnings -Auto-connect |
| Surfshark | Windows, macOS, Linux | $2.19/month for 27 months | 32.91 Mbps | -WebRTC safety -Split tunneling -CleanWeb -Geo-spoofing -Surfshark Alert |
| ExpressVPN | Windows, macOS, Linux | $6.67/month for 15 months | 36.97 Mbps | -WebRTC safety -Location spoofing -Auto-connect |
| Proton VPN | Windows, macOS, Linux | $4.49/month for 24 months | 33.09 Mbps | -WebRTC safety -Split tunneling -Secure Core -Auto-connect |
| PIA | Windows, macOS, Linux | $2.03/month for 28 months | 29.05 Mbps | -WebRTC safety -HTTPS browsing -Tracking safety -PIA MACE -Split tunneling |
1. NordVPN — Best VPN Overall With the Fastest Speeds
New NordVPN customers can enjoy a considerable price reduction on their first two years of service.
- Kill switch
- Split tunneling
- Location spoofing
- Threat protection
- Can’t change protocols
The NordVPN extension for Firefox is the only one on this list with a kill switch. Once activated, the kill switch blocks Mozilla Firefox from accessing the internet when the VPN connection drops, preventing your browsing activities from leaking. There’s also a “split tunneling” feature that excludes domains and IP addresses of your choice from the VPN tunnel.
NordVPN for Firefox also has threat protection for blocking ads and malicious websites when browsing. However, you must be logged in to your NordVPN account to use the extension on Firefox. Fortunately, NordVPN isn’t that costly; you can read more about that in this NordVPN review.
Other features include location spoofing, which sets your browser to use the location and time zone of the VPN server to which you’re connected. You can also stop WebRTC leaks that may expose your real IP address to your internet service provider (ISP). Another helpful feature is the “warnings” tool, which notifies you when the websites you’re visiting aren’t secure.
My Experience With NordVPN: Hands-On Performance
The NordVPN Firefox extension is exclusive to Windows, Mac and Linux PCs. When you open the extension, a “quick connect” button connects you to the fastest server that’s nearest to your physical location. All the servers are listed alphabetically, complete with a search button to find them easily..
I loved the “auto-connect” feature that activates the VPN extension when you launch Firefox. This is very handy if you frequently forget to connect to a server before browsing. You can enable or disable split tunneling, the kill switch, threat protection and location spoofing from NordVPN for Firefox. Even with all those features, it remains easy to use.
One downside is that there’s no option to change the protocols directly through the VPN browser extension.
NordVPN Speed Test Results
To see how fast NordVPN for Firefox is, I connected to Zagreb, Croatia, and ran a speed test. I got average speeds of 278.22 Mbps on my unprotected speeds of 292 Mbps, a 4.72% speed drop. Enough to stream without buffering and play web browser games like Planetarion without lags.
NordVPN Pricing and Value
The NordVPN Basic plan is the most affordable option, and it comes at three durations. The two-year plan is the cheapest, costing $3.39 per month for a total of $81.36 for the first 24 months.
It’s followed by the one-year plan at $4.99 per month, billed at $59.88 for the first year. The last option is the monthly plan, which costs $12.99 per month and is billed every 30 days. All three plans come with a 30-day money-back guarantee.
- Best deal: $3.39 per month
2. Surfshark — Feature-Rich Firefox VPN
Register now to receive a substantial discount for the initial two-year period.
- Split tunneling
- Ad & tracker blocker
- Unlimited device connections
- No kill switch
- Can’t change protocols
Surfshark for Firefox has split tunneling (called Bypasser) for adding websites you wish to exclude from the VPN, which is ideal for online sites that don’t like VPN connections. The extension also comes with CleanWeb to block ads, trackers and cookie pop-ups for a smooth browsing experience. You can read more about CleanWeb’s efficacy in our Surfshark review.
Surfshark Alert is another helpful feature that gives real-time alerts when your data leaks on risky websites. You can also enable geo-spoofing to hide your real location from the websites you access, which is important even on sites that you consider trustworthy.
The WebRTC leak protection stops websites from discovering your IP and location due to leaking WebRTC communications. Like the other VPNs on this list, you must log in to a paid Surfshark account online to use this VPN extension.
My Experience With Surfshark: Hands-On Performance
The Surfshark extension for Firefox is straightforward. Once you log in to your account and install the extension, you can access all the features like CleanWeb, auto-connect, split tunneling, geo-spoofing and WebRTC blocks.
Overall, it’s hard to tell the difference between this extension and the Surfshark VPN app. The server location list is in alphabetical order, so scrolling down to your desired location is easy. Alternatively, you can use the search function. However, you can’t change the VPN protocol.
Surfshark Speed Test Results
I conducted a quick speed test using a Croatian server location. The average speed was 278.85 Mbps, a 4.50% speed drop — very close to Proton VPN and NordVPN. Still, web pages loaded quickly, and I could stream content on sites like Hulu without any buffering wheels.
Surfshark Pricing and Value
Surfshark is an affordable VPN. The Surfshark Starter plan (which includes the browser extension) comes with three price options. The 24-month plan provides the best deal at $2.19 per month with three extra months, totaling $59.13 for the first 27 months.
The next best option is the 12-month plan at $2.79 per month plus an extra three months free, amounting to $41.85 for the first 15 months. The last option is the monthly plan, which will set you back $15.45 per month. All the plans are fully refundable within 30 days.
- Best deal: $2.19 per month
3. ExpressVPN — Best Easy to Use Firefox VPN
ExpressVPN’s most attractive offer comes with a significant price cut.
- Simple user interface
- Fastest connection speeds
- Blocks WebRTC to protect IPs
- No kill switch button
- Can’t change protocols
ExpressVPN has a user-friendly browser extension for Firefox that lets you connect to its full server list. While you do need an ExpressVPN subscription to use the browser extension, the setup process after signing up took me less than a minute.
One of its notable security and privacy features is WebRTC blocking,which prevents WebRTC leaks. These leaks happen when a browser that’s using WebRTC technology to establish high-quality communication channels accidentally transmits information outside the encrypted VPN tunnel — information that may include your real IP address.
One of the downsides of blocking WebRTC is that it lowers the quality of your audio and video streams. Fortunately, ExpressVPN and all the other alternatives on this list cover for that with their reliably fast speeds.
There’s also location spoofing, which modifies your Firefox geolocation data to match the server location you’re using. This is important for making sure your browser won’t give you away when you’re accessing geo-restricted content.
My Experience With ExpressVPN: Hands-On Performance
You can use the ExpressVPN Firefox browser extension on Windows, Mac and Linux. The VPN servers are listed by continent for easy scrolling. We discuss more details about the overall usability of this VPN service in our ExpressVPN review.
The “smart location” option will connect you to the fastest server available from your physical location. However, the kill switch and split tunneling aren’t available without the desktop VPN. You can’t change protocols through the VPN browser extension, but you can set the browser extension to auto-connect when you open the browser.
ExpressVPN Speed Test Results
I connected to a Croatian server and ran a speed test on my unprotected network of 292 Mbps. ExpressVPN gave me 282.0 Mbps — an outstandingly low 3.42% speed drop. Streaming 4K content on Netflix via Firefox was smooth without buffering, and so was playing web games like Joe Danger.
ExpressVPN Pricing and Value
ExpressVPN has three price plans. The 12-month option offers the best deal at $6.67 per month, adding up to $80.04 plus three months free. The next affordable plan is the six-month option, which costs $9.99 per month, for a total of $59.95. The final plan is billed every 30 days at $12.95 per month. All three plans are covered by a 30-day money-back guarantee.
- Best deal: $6.67 per month
4. Proton VPN — Best Firefox VPN for Beginners
- Fast speeds
- Split tunneling
- Private Secure Core servers
- No kill switch
- Browser extension not supported on free version
Proton VPN for Firefox is the best VPN extension for new users. It’s the only VPN on our list with a free version, though the browser extension is available for only premium subscribers. Available features include the usual WebRTC leak protection that stops Firefox from leaking your IP address to the websites you open. You can enable or disable that option in the settings.
Proton VPN for Firefox also comes with split tunneling that lets you exclude certain domains from the VPN tunnel. You also get unrestricted access to the Secure Core servers, which provide extra protection by routing your Firefox traffic through multiple private servers. We have more information on these reliable servers in our Proton VPN review.
My Experience With Proton VPN: Hands-On Performance
If you’ve used the Proton VPN app on mobile or PC, you’ll feel right at home using this Firefox extension. You can scroll down the server list to find what you want, or you can use the search function. The split tunneling, Secure Core servers and WebRTC leak protection can all be enabled or disabled depending on your needs.
The “auto-connect” feature reconnects the VPN extension to the last server you used whenever you launch Firefox. You can also access the help center straight from the extension through links that direct you to the right support page. However, there’s no kill switch and you can’t change your VPN protocol.
Proton VPN Speed Test Results
I connected to a Croatian server and ran a speed test using my unprotected connection of 292 Mbps. Proton VPN for Firefox averaged 279.70 Mbps — a 4.21% speed drop — which just about tied with NordVPN. I also managed to stream 4K content without any buffering.
Proton VPN Pricing and Value
There are three Proton VPN price plans. The most affordable option is the 24-month plan, which costs $4.49 per month for a total of $107.76. If that’s too long, you can try the 12-month plan at $4.99 per month for a combined cost of $59.88. The last option is the monthly plan that costs $9.99 per month. Each plan is covered by a 30-day money-back guarantee.
- Best deal: $4.49 per month
5. Private Internet Access — Most Affordable Firefox VPN
- Split tunneling
- User-friendly interface
- PIA MACE ad & tracker blocker
- No kill switch
- Limited server network
- Can’t change protocols
Private Internet Access (PIA) has a Firefox extension that allows you to block WebRTC IP detection, ensuring your actual IP address remains unseen by anyone snooping around. Additionally, you can set the extension to browse websites using HTTPS so that no one can discreetly record sensitive data, like your password keystrokes, on unsecured websites.
Other features include tracking protection that prevents tracking by advertisers, and fingerprint protection to block the transmission of certain data that can be used to ID your devices. Finally, the PIA MACE blocker stops pop-up ads, malicious websites and trackers from interfering with your browsing on Firefox. Read more on PIA MACE in our PIA review.
A “split tunneling” feature called Bypass List lets you choose which sites to pass through the encrypted tunnel and which to exclude. Like the other VPNs, you must be logged in to your paid PIA account to use the VPN extension on Firefox.
My Experience With PIA: Hands-On Performance
You can access PIA servers by scrolling down the list or using the search function. Furthermore, there are latency values next to each server that indicate the speed of a particular server location, which will save you time.
The settings are also detailed with multiple features like PIA MACE, WebRTC blocking and tracking protection. PIA MACE prevented a significant number of ads from popping up, although a few aggressive ones managed to sneak through. You can also set the extension to always be active whenever you launch Firefox, minimizing the chances of browsing without protection.
PIA doesn’t give you an option to change protocols. I also noticed that the available server locations are limited compared to the PIA app, as I couldn’t find African locations like South Africa or Nigeria, which I know are available on desktop and mobile.
PIA Speed Test Results
I connected to a Croatian server and ran a quick speed test. PIA averaged 242.17 Mbps,which was a 17.07% speed drop. It may be the slowest Firefox VPN on this list, but it comfortably handled 4K streaming and lightweight browser gaming without interruptions.
PIA Pricing and Value
There are three Private Internet Access price plans. The most affordable one is the 24-month option — which also comes with an extra four months free — costing $2.03 per month for a total of $56.94.
The next affordable plan is the six-month option at $7.50 per month, amounting to $45 for the first six months. There’s also a short-term monthly plan that costs $11.99 per month, billed every 30 days. Every plan comes with a 30-day money-back guarantee.
- Best deal: $2.03 per month
Why Use a VPN for Firefox Browser?
Ideally, using a VPN app to protect your entire system is the logical path. However, a VPN extension for a browser like Firefox has several benefits. Firstly, it’s more lightweight than the actual VPN, and since it only encrypts your browser traffic, you’ll likely get better speeds overall.
Secondly, installing a VPN extension for Firefox takes less than 20 seconds. You simply download the extension from the VPN website and follow the prompts to add it to your browser. Once you sign in to your account, it’s ready to use.
Another advantage is that VPN browsers have user-friendly GUIs, so navigating them won’t be an issue even for inexperienced users. Additionally, Firefox VPN extensions are independent from the VPN apps. You don’t need to install the NordVPN app on your PC to use the NordVPN Firefox extension. As long as you have your login credentials, you’re good to go.
However, most reliable VPNs for Firefox — like ExpressVPN, NordVPN and Proton VPN — only work with premium subscriptions. Additionally, many lack vital features like the kill switch and the capacity to change protocols. If you’re on an unsecured network, we recommend using a desktop or mobile VPN app with an active kill switch.
How to Choose the Best VPNs for Firefox
You can use the following criteria to choose the best VPN for Firefox.
- Firefox support: The VPN must have an extension for Mozilla Firefox. You should be able to download this extension from the VPN website or the Firefox add-on market, and install it directly into the browser.
- Privacy and security features: Look for basic privacy and security features like WebRTC leak protection, ad and malware blockers, tracker blockers and a kill switch.
- Split tunneling: This allows you to choose which domains to pass through the VPN tunnel and which to exclude. It’s handy for sites that don’t allow VPNs.
- Connection speeds: Go for a VPN with fast connection speeds. You need at least 25 Mbps to watch streams in good definition without lags and buffering.
- Ease of use: The VPN extension should have an easy-to-navigate GUI. Consider how easy it is to find a server location or a vital feature in the settings.
How to Set Up and Use a VPN Extension for Firefox
You can set up and use a VPN extension for Firefox using the following steps.
1. Subscribe to a VPN
The best VPN extensions for Firefox aren’t free. You must first purchase a subscription that fits your budget.
2. Install the VPN App
VPN extensions for Firefox only work when the corresponding VPN app is installed on your PC. Download and install the VPN app that aligns with your operating system, and then sign in to your account. In my case, I use macOS.
3. Download and Install the Firefox Extension
Locate the Mozilla Firefox extension and click “get extension” to install it.
4. Enable the VPN Extension
The VPN add-on will appear on the new web page that opens on your screen. To complete the setup, click the “add to Firefox” button and then click “enable.”
5. Sign In and Connect to a Server
Click the extension button in the top-right corner of your Firefox browser, then click the VPN extension you just enabled to launch it. Sign in to your account, connect to your chosen server and start browsing securely.
Does Firefox Have a Built-In VPN?
No, Firefox doesn’t have a built-in VPN. However, it has a premium product called Mozilla VPN, which was launched in 2020 as an open-source virtual private network. Mozilla VPN offers 500 servers in over 30 countries, supports up to five simultaneous device connections and encrypts your internet traffic.
As of April 2024, Mozilla VPN is available for Windows 10 and 11, macOS 10.15 and above, Linux 20.04 and above, Ubuntu 20.04 and above, Android 8 and above, and iOS 14 and above. I didn’t name Mozilla VPN as one of the best VPNs for Firefox as it’s still in development, and it’s only available in the U.S., Europe and a few Asian countries.
Best Paid & Free VPN Extensions for Firefox on Reddit
According to Reddit, Firefox’s best paid VPN extensions include top choices like NordVPN, Surfshark, ExpressVPN and Proton VPN. Reliable free VPN extensions for Mozilla Firefox are hard to come by, but Windscribe is one good example. We’ve got a Windscribe review where you can learn more.
Conclusion
NordVPN is the best VPN for Firefox because of its amazing user interface, WebRTC leak protection, anonymous location spoofing and protection on unsecured websites.
Most importantly, it’s the fastest option here, which is good for streaming and web gaming. Other notable alternatives Surfshark for its reliable ad blocker.
Do you predominantly use Firefox for browsing, or do you prefer other choices like Chrome? Have you ever used a VPN browser extension before? How different was it compared to a VPN app? Tell us what you think in the comments below, and thank you for always reading our blog.
FAQ: Top VPN for Firefox
Which VPN Is Best for Firefox?
NordVPN is the best VPN for Firefox. It offers leak protection when browsing insecure websites, and it has some of the fastest speeds for streaming and playing online games on Mozilla Firefox.Does Firefox Have a Built-In VPN?
No, Firefox doesn’t have a built-in VPN. However, it recently released its own VPN, Mozilla VPN, which is available on Windows, macOS, Linux, Android and iOS.Is There a Free VPN With Firefox?
Windscribe is a good example of a free VPN with a Firefox extension.Is Firefox VPN Worth It?
A Firefox VPN is worth using if you already have a premium VPN subscription, as you can add the extension and use it from time to time. However, if you’re already using the VPN app, which has more features and security, then you can comfortably do without the Firefox extension.
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