© 2021 CyberNews - Latest tech news,
product reviews, and analyses.

If you purchase via links on our site, we may receive affiliate commissions.

Best VPN add-ons for Firefox in 2021


If you’re concerned about online privacy, Firefox is a good choice. However, making your browser safer by using a VPN is even better. A VPN will hide your online activities and encrypt your data which assures you a private network. And you can use it to unblock geo-restricted content from anywhere in the world.

Lots of VPN services have designed an extension specifically for Firefox, but they all come with different benefits and capabilities. In this article, we’ll talk you through our pick of the best VPN extensions for Firefox and explain how to install one on your device. So read on and grant your security.

Best VPN add-ons for Mozilla Firefox:

  1. NordVPN - Best VPN add-on for Firefox
  2. Surfshark - Unlimited VPN connections
  3. Windscribe - Cheapest VPN extension for Firefox
  4. Private Internet Access - Largest VPN server network
  5. ExpressVPN - Fast Firefox VPN

How to add a VPN extension in Firefox

  1. Choose a VPN provider. We recommend NordVPN.
  2. Find the download page.
  3. Select the Firefox extension or the desktop app that suits your operating system.
  4. Install the app or extension onto your device.
  5. Log in, connect, and off you go!

Best VPN extensions for Firefox – our detailed list:

We’ve tested lots of VPN extensions for Firefox and have curated a list of our five favorites. You can read their descriptions and choose the one that fits your needs the most.

  • Baseline testing speed: 300 Mbps download/300 Mbps upload

1. NordVPN - Best VPN add-on for Firefox

NordVPN banner
Based in: Panama
Dedicated Firefox extension:Yes
Servers/countries:5,542 servers in 59 countries
Current deal:Get NordVPN, now 72% OFF + 3 Months FREE!

If you’re looking for a secure VPN with a great Firefox extension, NordVPN is probably the best one you can get. Crucially, its Firefox extension can be used alone, so you don’t have to load up the app to get it to work. This means that it’s lightweight and easy to use, making it a quick and simple alternative to using a full VPN service.

Even better, NordVPN’s Firefox extension will encrypt traffic and prevent IP leaks. And you can set it up so that it will connect as soon as you open the Firefox browser. Therefore, you don’t have to remember to connect every time you go online.

Elsewhere, NordVPN has some of the fastest and most reliable connection speeds we’ve ever tested, with an average speed of 249Mbps. It’s worth noting, though, that its fast speeds are predominantly due to its NordLynx protocol, which is only available on its desktop and mobile apps. However, the Firefox extension still provides awesome speeds, and it’s great at blocking malware and ads with its Cybersec feature.

NordVPN has more than 5,500 servers in 59 countries, and it can unblock geo-restrictions on every streaming service we’ve tested it on. It boasts an extensive range of excellent security features, and it supports custom DNS, router connections, and split tunneling. You also get up to 6 simultaneous connections.

Pricing plans for NordVPN start at just $3.30 a month with a 30-day money-back guarantee.

Visit NordVPN to learn more about the features

2. Surfshark - Unlimited VPN connections

Surfshark VPN banner
Based in: British Virgin Islands
Dedicated Firefox extension: Yes
Servers/countries: 3,200 servers in 65 countries
Current deal:Get Surfshark, now 81% OFF!

Surfshark is an excellent choice if you’re looking for great value for money because it includes many of the features that NordVPN has, but it’s a bit cheaper. Better still, it has a trustworthy extension available for Firefox and Chrome.

This extension looks pretty much identical to the desktop app. So you can use it to connect to servers in the same way as you would on the full app. It has been independently audited for security, so you can rest assured that Surfshark will keep all your online activity private, whether you use the app or the add-on.

Surfshark has an impressive suite of security features, including CleanWeb, which blocks ads, trackers, and malware. Its WireGuard protocol delivers fast speeds with an average of 263Mbps. So it certainly won’t slow you down while you’re surfing or streaming. It has over 3,200 servers in 65 countries, and it can unblock pretty much any streaming platform. So you can use it to access geo-restricted content from anywhere.

One of our favorite things about Surfshark is that it comes with unlimited simultaneous connections, so it’s ideal if you’re looking for a VPN for the whole family.

And best of all, Surfshark is great value for money, with prices starting at just $2.49 a month. It also comes with a 30-day money-back guarantee, so you can try it out before committing.

Visit Surfshark to learn more about the features

3. Windscribe - Cheapest VPN extension for Firefox

Windscribe banner
Based in: Canada
Dedicated Firefox extension: Yes
Servers/countries: 480 servers in 63 countries
Current deal:Get 55% OFF with 1-year plan!

If you’re looking for a really cheap VPN with a Firefox extension, Windscribe could be exactly what you’re looking for. The browser extension has some really useful features, including the ability to block trackers, malware, ads, and cookies. It also has notifications and timezone spoofing. And it can exclude websites from the proxy connection. However, there is no encryption on the Firefox extension.

Aside from this, Windscribe has over 480 servers in 63 countries. It’s good for streaming because it can unblock geo-restricted content from anywhere. On the flip side, it’s not as fast as a lot of its competitors, with an average connection speed of 84mbps.

Windscribe is based in Canada, which is part of the 5 Eyes - a surveillance agreement between participating countries that share intelligence with one another. This, among other things, makes Canada a not very privacy-friendly country. With that said, they do operate under a strict no-logs policy, making their business location a bit less of an issue.

What's great is this service comes with unlimited simultaneous connections. And prices for a single server start at just $1 a month. So, it’s definitely one of the cheapest options around.

Visit Windscribe to learn more about the features

4. Private Internet Access - Largest VPN server network

Private Internet Access banner
Based in:USA
Dedicated Firefox extension: Yes
Servers/countries: 35,500+ servers in 77 countries
Current deal:Get PIA, now 83% OFF + 2 Month FREE!

PIA (Private Internet Access) has the largest VPN network in the world. And it’s a great choice for Firefox users because it boasts a highly customizable browser extension. You can configure it in such a way that it will automatically reconnect to specific servers when you access certain websites.

Even better, you can use the add-on to exclude some websites from the proxy connection. And it has a selection of other features, including the ability to block access to your webcam and mic, and the option to disable autofill, network prediction, and Facebook trackers. Although, you can only use the extension to connect to some of PIA’s large selection of servers. You don’t get access to all of them.

Still, if you’re looking for a VPN with a lot of servers, this could be the ideal solution for you. PIA has more than 35,000 servers in 77 countries. However, it can be a bit hit and miss when it comes to unblocking geo-restricted content. And it’s certainly not the fastest VPN, with its average speed coming in at 140mbps.

PIA is based in the US, which is part of 5 Eyes. However, the provider has proven several times that they don't collect data on users, which is great. One subscription gets you 10 simultaneous connections, so the whole family can connect at the same time.

Prices for PIA start at $2.85 a month.

Visit PIA to learn more about the features

5. ExpressVPN - Fast Firefox VPN

ExpressVPN banner
Based in:British Virgin Islands
Dedicated Firefox extension: Yes
Servers/countries: 3,000 servers in 94 countries
Current deal:Get ExpressVPN, now 35% OFF!

ExpressVPN is another excellent choice, as it offers a dedicated browser extension for Firefox, Safari, and Chrome. However, while most VPN add-ons work separately from the desktop app, ExpressVPN’s extension in more of a remote control unit for your VPN app. This means that you need to install both the desktop app and the Firefox extension to get this to work.

The good news is, this means the add-on has better encryption, access to more servers and features, and it’s easy to use. But on the downside, it doesn’t have the advantages you would normally see with a regular VPN extension. It’s not really a lightweight option.

Still, whatever your needs from a VPN, ExpressVPN will deliver the lot. It has over 3,000 servers in 94 countries. And it can unblock geo-restricted content on pretty much any streaming service. Better still, it delivers very fast speeds, averaging at 226Mbps.

ExpressVPN offers up to 5 simultaneous encryptions, and it supports SmartDNS, obfuscated servers, and split tunneling. You’ll find it has a very intuitive app, so it’s really easy to use. And there’s access to lots of handy guides to help you set it up on your router.

For all this though, it is quite expensive. Prices start at $8.32 a month. But it comes with a 30-day money-back guarantee, so you can try it out.

Visit ExpressVPN to learn more about the features

How we selected and tested these VPNs

When choosing VPNs for our list, we looked at the following criteria:

  • Whether it has a Firefox add-on with good features: Indeed, the most important thing for this list is to make sure that the VPN has a dedicated Firefox extension with a range of great features to make it secure, fast, and easy to use. We chose VPNs that each had a Firefox extension that would deliver a secure and comfortable experience.
  • Speed: Delivering fast and reliable speeds are crucial for any VPN, particularly if you want to use it to stream content. After all, there are few things more annoying than dealing with buffering while you binge-watch. So we tested the speeds of the VPNs and highlighted the results in our list.
  • Whether it’s good for streaming: One of the main benefits of a VPN is that you can use it to bypass geo-restrictions on streaming services in other countries. We made sure our list included VPNs that can successfully bypass region restrictions.
  • Customer support: In case anything goes wrong, it’s important to be able to get help ASAP. Thus, we chose VPNs that offer some form of customer support to make sure you’re covered.
  • Price: When you sign up for anything, it’s vital to make sure the price is right. We chose a range of competitively priced options to suit every budget.
  • Security and privacy: One of the main reasons to use a VPN is to improve your online security and privacy. The VPNs on our list each come with a range of features to keep your information safe and secure while you’re online.

Do I really need a VPN on my Firefox browser?

Using a VPN extension on your Firefox browser is a very good idea. After all, a good one should deliver a lot of the same benefits included in a VPN desktop app, so it will improve your online security. Although it’s only a browser extension, it should still hide your IP address, and it will stop your online activity from being tracked by your ISP or other third parties. It can also allow you to unblock geo-restricted content on streaming platforms.

Some will even connect automatically, so you don’t need to remember to connect to a VPN every time you go online. And because it’s an add-on, it will likely be a more lightweight option that will consume fewer resources than the desktop app. It should also be easier to use than the app version, with fewer confusing options and features. So it can be a good choice for beginners.

Having said that, if you want to use a VPN for more than just browsing the internet, you might be better off using the desktop app. This will give you access to a lot more features. And it will deliver much more robust privacy measures. So, if protecting your online identity is a big concern of yours, we would recommend sticking with the desktop app instead.

How to set up a VPN addon on Mozilla Firefox?

Setting a VPN extension for your Firefox browser is a great step towards secure browsing. Choosing the best VPN extension for Firefox will also guarantee you the most efficient security. Thus, in this case, we would recommend NordVPN. It provides you with HTTPS to protect your traffic and it has the Cybersec feature too which blocks ads and malicious websites.

Let’s see how to set up a VPN extension on Mozilla Firefox:

  1. Download the extension from the Firefox website for extensions
  2. Click “Add to Firefox” to install the extension
Adding NordVPN extension on Firefox
  1. Click “Add” after getting prompted with permission for the extension
Permitting the extension
  1. Check this and hit “Okay” to allow the application to run in a private window

Allowing the extension to run in a private window
  1. When the installation is complete, the NordVPN icon will appear on the Toolbar on the top right corner of the Firefox browser
NordVPN icon on the toolbar
  1. Click on the NordVPN logo
  2. Choose to "Log in" or "Sign up" if you don’t have an account yet
  3. After signing in to your account, you will be able to use the feature "Quick connect" or choose a specific server by clicking "Connect to a specific country"
  4. After connecting to a server, the NordVPN logo on the toolbar turns green which indicates that your connection is secured. Now you can enjoy safe browsing!

Is it safe to use a VPN add-on on Firefox?

Yes, so long as you’re using a reputable VPN, such as NordVPN, it’s perfectly safe to use a VPN browser extension on Firefox. A decent VPN add-on will give you some protection by keeping your online identity private, including your IP address. It will also stop hackers and other third parties from being able to track your online activity, including what websites you’re visiting and what you do while you’re on them.

Having said that, VPN browser extensions don’t have as many security features as VPN desktop apps. After all, it’s worth noting that a good VPN extension will only protect your online traffic while you’re using your browser. Some VPN browser extensions won’t encrypt your connection at all. So it’s worth bearing that in mind before you set up your add-on.

On the other hand, a VPN desktop app will protect all your internet traffic from your PC. So, provided you’ve chosen a reliable VPN, your online information will remain completely safe from prying eyes.

But it’s important to be aware that not all VPNs are as safe as they seem. In fact, some free VPN apps can actually make your data less secure.

How a VPN can help with WebRTC leaks?

A WebRTC leak is when your public IP address is exposed via the browser’s WebRTC functionality. This means that your IP address is disclosed to any site and hackers are able to access your sensitive information.

If you end up with a WebRTC leak, then getting a VPN is the best option. It is able to block any unwanted IP address leaks through WebRTC while allowing authorized connections to continue under your VPN-provided anonymous IP.

See how to check for WebRTC leak and find out if your real IP address wasn’t exposed:

  1. Disconnect and exit the VPN that you are connected to
  2. Type in “What’s my IP address” into Google to find out your original IP address and write it down
  3. Exit your browser
  4. Re-launch your VPN and refresh the webpage. Attempt step 2 once more
  5. If the displayed IP address is the same as it was before step 4, then it means a WebRTC leak is exposing your original IP address.

Can I use a free VPN for Firefox?

While it’s technically possible to use a free VPN with a Firefox extension, it’s certainly not something we’d recommend.

Free VPNs usually make money by tracking customers’ online activities and selling the information to third parties. And as if this wasn’t enough to put you off, free VPNs offer much slower speeds. And they often can’t unblock region restrictions on international streaming services.

If you really want to use a free VPN, you’d probably be better off using a freemium. This is a free version of a paid VPN that will usually have much more limited functionality than the paid-for option. They can’t unblock geo-restricted content, and they don’t offer as many security features. Freemiums also tend to come with data caps, so they’re not suitable for anything more than light web browsing.

If you do want to give it a go, however, we’d recommend trying Windscribe’s freemium option. It comes with access to a reasonable number of features, and it has a fairly high data cap of 10GB a month.

Alternatively, most paid-for VPNs offer a free 30-day money-back guarantee. So if you only want to use a VPN in the short term, you could try it out for a month and then claim your money back.


Lots of VPN services have really useful browser extensions for Firefox. They tend to be a lot more lightweight than traditional VPN desktop apps, so they come with plenty of advantages. It uses up fewer resources and offers faster connections, and it can use a different browser for regular, direct connections.

After thorough testing we can say the tools on this list will be great inside and outside of Firefox!


More VPN guides from CyberNews:

Best VPNs for Chromebook: bypass restrictions on your ultraportable device

Best VPN extensions for Chrome: best plug-ins for the most popular browser in the world

Best VPNs for Windows: exceptional privacy and security on your PC or laptop

Amba pricien
Amba pricien
prefix 23 days ago
Would you recommend the same vpn for Firefox for pc and mobile? I'm looking for mobile friendly option
CyberNews Team
CyberNews Team
prefix 9 days ago
Hello! All the VPNs mentioned on our list are mobile-friendly, especially NordVPN and Surfshark. You can also use them on your PC.
prefix 29 days ago
So if I want to be anonymous I need vpn for firefox? How is it different from guest mode? Will it save my browsing history? Thanks for helping me!! It's a difficult topic to understand
CyberNews Team
CyberNews Team
prefix 22 days ago
Hello! Here's the deal - when you use the incognito mode of a browser, your Internet Service Provider (ISP) can still see what kind of websites you've visited (even though you can't see them in your browser history). However, a VPN makes your search history unreadable to the ISP, making your internet activity truly anonymous.
Leave a Reply

Your email address will not be published. Required fields are marked