Download the best VPN extension for Firefox

A Firefox VPN extension is an add-on you install in your browser that helps protect your privacy while you browse. It encrypts your browser’s traffic and helps keep your IP address private from many websites, reducing how much information they can associate with your activity.

When you activate a VPN extension in Firefox, it routes your browser traffic through a secure, encrypted tunnel to a VPN server. This helps keep your activity private from many networks and websites. Some extensions, including ExpressVPN’s, also offer features like WebRTC leak protection and HTML5 geolocation spoofing for additional privacy controls.

Without a VPN, your browser activity is more easily monitored by your internet provider, your employer or school, websites you visit, and advertisers. A Firefox VPN extension helps keep your activity private by encrypting your browser traffic and keeping your IP address private from many websites. It can offer added peace of mind when using public Wi-Fi or browsing sensitive topics.

No. You can use the Firefox extension on its own as a standalone VPN proxy for browser-only protection. If you also install the ExpressVPN app, you can manage device-wide protection from the extension and access app features such as Internet Kill Switch.

Free proxies often fall short in crucial areas such as speed, security, encryption, and overall quality of service. This can lead to a suboptimal online experience.

There are also risks associated with some free proxies, including injecting targeted ads and spam, logging your browsing history, and even recording sensitive information. Instead, consider investing in a Firefox VPN extension like ExpressVPN for stronger privacy protections, more consistent performance, and additional features such as WebRTC blocking and HTML5 geolocation spoofing.

There are two ways to browse on Firefox with a VPN:

1. Use a VPN app: Download and install the ExpressVPN app on your device, open it, and connect to a VPN server. All your traffic will be routed through the encrypted VPN connection.

2. Use a VPN browser extension: Download the ExpressVPN Firefox extension to your device. Click the extension icon in the toolbar and click “Connect.” Firefox will now route your browser traffic through your chosen VPN server.

The simplest way to check whether your Firefox VPN is working is to search “What’s my IP” in the search bar, both with and without the VPN turned on. You should see that your IP address changes when you use a VPN.

No protection is 100% foolproof, even if Firefox is considered one of the most secure browsers available.

The ExpressVPN extension for Firefox offers easy control of your VPN connection from your browser and includes additional features such as WebRTC blocking and HTML5 geolocation spoofing. It provides added privacy inside Firefox, whether or not the ExpressVPN app is running.

Your browser history is typically stored inside your browser. Using a VPN will not change this, but you can disable such recording in Firefox and delete any history collected so far.

Your browsing history might also be inferred by others monitoring your internet connection, such as your internet service provider or Wi-Fi operator. ExpressVPN encrypts all data between your device and the ExpressVPN servers, helping prevent ISPs or Wi-Fi operators from seeing the sites you visit.

Note that browser history is not the same as search history. If you are logged in to Google and using its search engine, those searches will be recorded even if you are using a VPN.

Security is at the forefront of what we do at ExpressVPN. Not only do we aim to design our apps and systems to offer a high level of privacy and security, but we also routinely engage independent auditors to validate our security claims. It’s one of the best ways for our users to know if they can trust our services to protect them. See the full list of audits.

Firefox offers Mozilla VPN, but it’s a separate paid service, not built into the standard browser. Firefox’s private browsing mode hides history locally, but it doesn’t encrypt your traffic or hide your IP from the outside world—that’s where a VPN comes in.

Smart Routing lets you set rules for how you want to connect to specific websites. For example, you can set it up to always connect to a particular VPN server location or to not use the proxy connection when visiting certain sites. Once set, these rules apply automatically in your browser, but don’t affect device-wide VPN connections.