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Get a Firefox VPN extension & protect your privacy

Get Surfshark proxy for Mozilla Firefox:

Secure your online activity

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Or install our fast VPN app on your favorite devices

Surfshark VPN (Virtual Private Network) offers a secure connection to protect all your devices. From our Firefox browser extension to a desktop VPN, mobile app, and proxies for both Chrome and Edge — we’ve got you covered.

What is a Firefox VPN proxy extension?

The Surfshark Firefox proxy extension (add-on) routes your browser’s online traffic through Surfshark’s servers, masking your IP (Internet Protocol) address for enhanced privacy. While the extension helps conceal your location, it does not fully encrypt all traffic like a VPN; instead, it’s the secure websites (HTTPS) that provide encryption between your browser and the destination site.

Note: Unlike most proxy extensions, Surfshark also masks your IP address.

How to get a VPN extension for Firefox in 3 easy steps

1. Get Surfshark

Pick a pricing plan and subscribe to Surfshark.

2. Add the extension

Get the Surfshark VPN Firefox Proxy add-on for Firefox.

3. Connect to a server

Hit Quick-connect and enjoy a private, safe, and unrestricted internet experience.

Instructions unclear? Visit our support page for more details.

Privacy, security, and other benefits of a VPN proxy for Firefox

Prevent activity tracking

Connecting to a Firefox VPN proxy is the key to staying safe online. Surfshark encrypts your traffic and hides your IP address so neither we nor anyone else can see what you do online.

Auto-connect to the fastest server

Although we have plenty of servers, you won’t need to waste time searching for the best one — Surfshark’s Auto-connect feature automatically provides the fastest connection, regardless of your location.

Secure all your devices at once

Surfshark VPN offers unlimited simultaneous connections. With no need to worry about VPN data caps, you can stay protected not just when using Firefox but also on other devices or operating systems — all at the same time.

Stop ads with CleanWeb

Surfshark’s CleanWeb feature acts as an ad blocker, preventing ads, trackers, and malware from compromising your security. This keeps your surfing experience smooth at all times.

Personalize your security with Bypasser

With Surfshark’s Bypasser (split tunneling) feature, you can choose which apps or services bypass the VPN connection. This can improve performance, making accessing services that don’t require complete VPN protection easier.

Tap into an expansive server network

Surfshark offers more than 3,200 dedicated servers in 100 countries. If you ever experience a slowdown, finding a less crowded server is as simple as can be.

Install with ease

Setting up a VPN doesn’t have to feel like a chore. Surfshark’s complete security suite is extremely easy to install, boosting your online security in no time.

Stay safe with Kill Switch

Surfshark’s Kill Switch instantly disconnects you from the internet if your VPN connection drops. This prevents accidental data exposure or leaks, keeping your Firefox browsing secure at all times.

Get double protection with Dynamic MultiHop

Dynamic MultiHop, our double VPN feature, routes your data through two VPN servers at once. By using Surfshark with Firefox, you double encrypt your information for enhanced privacy.

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Disclaimer: Please note that using Surfshark services for any illegal activities is strictly forbidden and violates our Terms of Service. Make sure that any use of Surfshark services for your particular activities conforms to all relevant laws and regulations, including those of any service providers and websites you access using Surfshark.

Should I be using a free Firefox proxy?

In the best-case scenario, free VPNs equal slow connection speeds and an excessive number of intrusive ads.

At worst, your data could be sold to third parties, and your device could get infected by malware or malvertising.

You will always be better off securing your Firefox activity with a paid VPN like Surfshark, both in terms of quality of service and your online privacy.

Verified security

“To sum up, Cure53 is highly satisfied to see such a strong security posture on the Surfshark VPN proxy extension, especially given the common vulnerability of similar products to privacy issues.”

Dr. Mario Heiderich, Founder & CEO of Cure53

3,200+ servers to deliver the best Firefox VPN proxy experience

All servers

Testimonials proving excellence

At Surfshark, we strive to offer a hassle-free experience for all our users. But don’t just take our word for it — here’s what the world has to say about us.

All the VPNs you mentioned are good. But Surfshark is the one I recommend in person for the best overall.

— Teshir Jennifer (@Aikojenny_) July 28, 2024

I’ve had SurfShark for years. It’s amazing.

— Morgan Leggett (@YouBettaLeggett) August 13, 2024

Trialling out @surfshark‘s IP rotation. It is doing it pretty well. Seamless in the background.

— Eakan (@eakangk) October 26, 2024

The reviews highlighted in this section were selected from publicly available posts on social media platforms. They reflect the opinions of individual users at the time of posting and may not represent the full range of our product features and qualities.

“Surfshark is a highly polished and powerful VPN that competes with the very best premium providers, all while offering a seriously tempting price point.”

“Surfshark is one of the best VPN services, comes crammed with features, runs on almost anything, and has some of the best download speeds around.”

“Surfshark is an excellent, well-rounded virtual private network that consistently ranks as one of CNET’s best VPNs.”

The reviews quoted on this page have been published by media outlets associated with Surfshark through affiliate partnerships. Their recommendations are based on their own independent research and insights to ensure value for the readers.

I have been using Surfshark since I got it and I love it!

MRWHOSETHEBOSS 20.2M subscribers

When I am traveling, I use Surfshark to access the internet quickly and securely, works like a treat in China.

SAM CHUI 3.61M subscribers

We love Surfshark because it is an easy-to-use app that you can download on all your devices.

MAX & OCCY 265K subscribers

“This is my first year and I absolutely love it. The fact I can have a good antivirus, great VPN, and incognito for like $120 a year is great.”

Open in Reddit

“I’ve been using Surfshark for 4 years on Android and ChromeOS with zero issues, it’s an absolute bargain”

Open in Reddit

“I’ve had it for 3 years and just renewed it for the next 2 years. I never have any issues with it and get my full internet speed..”

Open in Reddit

FT 1000: Europe’s Fastest Growing Companies 2024

Tech Advisor Editors’ Choice 2024

TechRadar Recommended 2024

Surfshark Antivirus AV-TEST Top Product 2024

Independent’s Editor’s Choice Best Value VPN 2023

Frequently asked questions

Are VPNs safe?

Yes, reputable VPNs are generally safe and provide additional privacy by encrypting your internet connection and hiding your IP address. However, it’s important to choose a trustworthy VPN provider to ensure that your data is secure and not logged — for example, Surfshark has undergone an independent infrastructure audit to assure users that their data remains in good hands.

How do I enable a VPN on Firefox?

To enable a VPN on Firefox, install a VPN extension from a reputable provider in the Firefox Add-ons store, then log in and activate it through the extension’s interface. This will route your browser’s traffic through the VPN.

How do I know if my Firefox VPN extension is working?

To check if your VPN extension is working, run a VPN test. The results should display the location of your VPN server rather than your actual location. Most VPN extensions also indicate active connections within dedicated icons.

How do I browse on Firefox with a VPN?

Once you enable the VPN in your Firefox browser, it will encrypt and route your traffic through its servers, allowing you to browse securely and access familiar content when traveling abroad. Simply browse as you normally would for added privacy.

Does Firefox have a built-in VPN?

No, Firefox does not come with a built-in VPN, but it offers VPN services through Firefox Private Network and Firefox Relay as optional add-ons. These services, however, require separate installation.

Is Firefox VPN free?

Firefox offers some free privacy tools, but its main VPN service, Mozilla VPN, requires a paid subscription for full access. Some limited privacy extensions may be available for free, but full VPN services typically come with a cost.

Is there a completely free VPN extension for Firefox?

Yes, there are free VPN extensions for Firefox, but their privacy practices and performance may vary. Be cautious with free options, as some may collect data or limit your browsing speed and server choices.

Get a Firefox VPN extension & protect your privacy

Choose the Surfshark proxy extension that’s right for you

Or install our fast VPN app on your favorite devices

What is a Firefox VPN proxy extension?