Best Free VPN for Firefox in 2025 (Top Secure & Fast Options)

IT Published on : November 20, 2025

Online privacy is more important than it has ever been, and installing a VPN (Virtual Private Network) on your Firefox browser can significantly enhance your safety, even with a free edition. But it’s important to understand that not all free VPNs are the same: while some protect your data with strong encryption, others may have slow speeds, data caps, or even questionable privacy practices.

This guide highlights the best free VPNs for Firefox in 2025, focusing on those that offer the best combination of security, speed, and usability. It also provides considerations on how to install and use these VPNs safely.

What You Should Look for in a Free Firefox VPN

When selecting a free VPN for Firefox, here are the most important factors you should consider:

• Strict no-logs policy: A trustworthy VPN should not keep records of your browsing activities. Look for providers that explicitly state they do not log connection or usage data.
• Strong encryption (AES-256): Encryption keeps your data secure. The AES-256 is the gold standard and is generally used by reputable VPNs.
• Decent speeds: Free plans can sometimes be slower and offer fewer server options than paid ones. Select a VPN that provides reasonably usable speeds for browsing, streaming, or downloading small files.
• Limited but useful free data: Many free VPN providers limit your monthly data usage to 2 or 10 GB. It’s better to select a VPN with a reasonable data cap that fits your intended use.
• Browser extension availability: If you are using Firefox, then in your case, having an extension (addon) is very important. Make sure the VPN supports a Firefox extension.
• No ads or minimal ads: Ensure the VPN has limited ads, as many free VPNs often bombard users with ads.
• Privacy reputation of the company: Research about the company, where they are based, if they have undergone third-party audits or transparency reports, etc.

Best Free VPNs for Firefox

Here are some of the top free VPNs that work well with Firefox as of 2025:

VPN	Monthly Data (Free)	Speed / Performance	No-Logs Policy	Strengths / Best For
ProtonVPN	Unlimited	Shared/free-tier servers may be slower when busy	Yes, strict no-logs, audited	Users who want unlimited data and strong privacy
Windscribe	10 GB (with email verification)	Suitable for casual browsing; limited server locations on the free plan <	Yes, AES-256, no logging of activity	Those who want a feature-rich free VPN + browser support
Hide.me	Unlimited	Speed can be limited; free users are limited to some server locations	Yes, zero-logging, independent audit, transparency reports	Privacy-first users who want a free plan with real usability
TunnelBear	2 GB	Suitable for light browsing, not for heavy usage or streaming	Yes, no logging of browsing activity	Beginners and casual users who need a simple, friendly VPN

Notes on Top Picks:

• Proton VPN is particularly strong because of its unlimited data in the free plan, which is rare.
• Windscribe is versatile; not only does it offer a data cap, but its extension includes ad and tracker blocking.
• Hide.me provides a decent server choice and strong privacy protections.
• TunnelBear is very beginner-friendly, though the data cap is quite tight for heavier users.

1. ProtonVPN Free

ProtonVPN is the best free VPN available today; it stands out with unlimited data service in the free plan. Proton’s free Firefox extension is available and regularly updated, providing seamless browser integration. The company behind ProtonVPN (Proton AG) is known globally for Proton Mail, which gives it significant credibility in privacy and security.

Key Features

• No ads and zero activity logging
• AES-256 encryption
• Secure protocols: OpenVPN, IKEv2/IPSec, WireGuard
• DNS leak protection
• Kill switch + Always-On
• Open-source apps (audited)
• Servers in 10 countries

ProtonVPN guarantees that free users are never tracked, monitored, or profiled. Because servers can get busy, speeds may vary, but the consistency of privacy makes ProtonVPN the #1 choice for security-focused users.

Where ProtonVPN Stands Out

• Swiss-based privacy laws protect user information
• Transparent and audited code
• Strong protection even on public Wi-Fi networks

Best For

• Users who want strong security, unlimited usage, and a free VPN backed by a reputable privacy-focused company.

2. Windscribe

Windscribe offers one of the most flexible free plans with a generous 10 GB of data per month (with email verification). It offers 10 server locations, and users can also build a custom plan if they outgrow free data limits.

With the unique R.O.B.E.R.T. feature, Windscribe blocks ads, malware, trackers, and malicious domains even on the free plan, making browsing much safer compared to many competitors.

Key Features

• 10 GB monthly data (with email verification)
• 2 GB is the default
• 10 free locations
• AES-256 cipher
• No-logs policy
• Built-in ad & tracker blocker (R.O.B.E.R.T.)
• Firewall feature (kill switch equivalent)
• Modern protocols: WireGuard, OpenVPN, IKEv2
• Split tunneling support

Where Windscribe Stands Out

• A large number of free server options
• Reliable speeds due to a distributed free network
• Free ad and malware blocking
• Highly functional even without upgrading

Best For

• Users who want multiple server choices and excellent performance while staying within a monthly data limit. And who might love extra perks, as Windscribe offers an additional 5 GB one-time bonus data, who tweets about them on X.

3. Hide.me Free

Hide.me is known for its transparency and a publicly audited no-logs policy. The free plan comes with unlimited data, which immediately sets it apart from most free services. It emphasizes security by offering nearly all premium protocols without paywalls, a significant advantage for users who want more control over their connection.

Key Features

• 8 free locations
• Unlimited monthly data
• Audited no-logs policy
• Advanced protocols available to free users: (WireGuard, OpenVPN, IKEv2/IPSec, SoftEther)
• Split tunneling
• Stealth Guard (kill-switch control)
• 24/7 support, even for free users

Where Hide.me Stands Out

• Unlimited data makes it suitable for daily use
• Fully audited privacy policy
• Wide range of VPN protocols available
• No ads or trackers

Best For

• Users who need a free VPN with strong privacy practices, unlimited bandwidth, and advanced protocol support.

4. TunnelBear Free

TunnelBear is known for its clean, friendly design and effortless user experience. While it offers only 2GB of monthly data (which was increased from 500 MB in 2023), it provides access to all premium server locations (40+ countries), a major advantage for occasional use.

Key Features

• 2 GB monthly data
• Access to all global locations
• AES-256 encryption
• VigilantBear (kill switch)
• GhostBear (obfuscation, ideal for restrictive networks)
• Clear no-logs policy
• Very easy to use across devices

Where TunnelBear Stands Out

• Most user-friendly layout
• All server locations unlocked
• Suitable for beginners who need a “set it and forget it” VPN
• Strong encryption and privacy policies

Best For

• Casual users, travelers, and people who only need a secure connection occasionally.

How to Install a Free VPN on Firefox

• Open Firefox → go to addons.mozilla.org.
• Search for your VPN provider.
• Click Add to Firefox.
• Grant required permission.
• Sign in or create a free account.
• Open the extension → pick a server → connect.
• (Optional) Enable WebRTC leak protection.

Free VPN Limitations You Should Know

Even the best free VPNs come with trade-offs:

• Data Caps: Many free plans limit data usage, which restricts heavy use (Proton VPN is the exception, offering unlimited data; others range from 2 to 10GB).
• Limited Server Choice: Free users often get access to only a few server locations.
• Speed Throttling: Free servers may be overused, causing slower speeds.
• No All-Device Protection: Browser-only VPN extensions do not cover other apps on your device.
• Potential Ads: Some free services include ads or upsell to paid plans.
• Logging Risks: Not all “free” providers are transparent, and it’s essential to constantly review their privacy policies and terms.

Best Alternatives

If you find free VPNs too restrictive, here are some affordable paid options that work great with Firefox:

• NordVPN: premium-grade speeds, strong encryption, and a standalone Firefox extension.
• CyberGhost: Budget pricing, strong streaming ability, no-logs, user-focused interface.
• Proton VPN Plus: same trusted provider, but with more servers, faster speeds, and advanced features.
• Windscribe Pro: increases your data cap and unlocks many more server locations.
• Surfshark: often very affordable, supports multiple devices, and has a solid Firefox extension.

Conclusion

Choosing a free VPN for Firefox in 2025 means balancing your needs: unlimited data, speed, and privacy. While no free option is likely to match the features of a top-tier paid VPN, services like ProtonVPN, Windscribe, Hide.me, and TunnelBear offer a compelling combination of security, usability, and data allowance.

If you mainly browse, access public Wi-Fi, or want basic content unblocking, a free VPN may be more than sufficient. However, if you require streaming, high usage, or consistently improved performance, consider upgrading to a paid plan.

Frequently Asked Questions

Q1. Are free VPNs safe for Firefox?

Ans. Yes, some are quite safe, but it depends. Reputable free VPNs (like Proton VPN) use strong encryption and have no-logs policies. But be cautious: some free services may log more data, show ads, or have limited protections.

Q2. Which free VPN has unlimited data?

Ans. ProtonVPN and hide.me officially list unlimited data on their free tiers. Windscribe and TunnelBear have explicit monthly caps (Windscribe: 10 GB with email verification; TunnelBear: 2 GB).

Q3. Can I stream with a free Firefox VPN?

Ans. Possibly, but it depends. Free VPNs often restrict server choice or throttle speeds, which can make streaming less reliable. Windscribe’s free plan has been known to unblock some services, but not always consistently.

Q4. Do free VPNs slow down Firefox?

Ans. They can. Free plans might have fewer servers, higher usage, or slower speeds during peak times. That said, many users will find their performance perfectly acceptable for regular browsing.

Q5. Is Firefox VPN Safe?

Ans. Yes, Firefox VPN is safe for light, everyday browsing. While it helps protect your IP address and keeps your activity private on public Wi-Fi, it’s mainly a basic privacy tool, not a full security solution. For advanced protection, consider a full-featured VPN service instead.

Q6. How can I reduce the risk of IP or DNS leaks in Firefox?

Ans. Best practices to reduce leaks:

• Use a VPN with built-in DNS leak protection and a kill switch.
• Enable WebRTC leak protection in Firefox (either via about:config or through the VPN extension if it provides that setting).
• Use the provider’s official browser extension or app (avoid unofficial builds).
• Test leaks using reputable leak-test tools while connected to the VPN. If you find leaks, stop using the connection and contact the VPN’s support.