Mozilla Firefox review

Firefox is the strongest free choice for people who want privacy from a browser that is not built on Google's Chromium. Mozilla blocks trackers automatically with no setup, says it does not sell personal data, and keeps its AI features optional so you can turn them off entirely. The biggest recent addition is a free built-in VPN that hides your IP address while you browse: Mozilla offers 50 GB of protected browsing every month, lets you pick a browsing location from over 20 countries, and its homepage advertises unlimited data through January 2027. Day to day, Firefox gives you tab groups, reader mode, picture-in-picture video, a customizable sidebar and PDF editing, plus over 30,000 extensions. Importing bookmarks, passwords and history from another browser is automatic. There is no built-in ad blocker, so people who want ads gone will add an extension. Firefox no longer supports Windows 8.1 and earlier or macOS 10.14 and earlier, which affects only older computers.

Who it is for

privacy-minded users who want an independent, non-Chromium browser

Price

Free, with a free built-in VPN that includes 50 GB of protected browsing a month.

Firefox now includes a free built-in VPN that hides your IP address while you browse, so websites see less of where you really are.
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Tracker blocking on by default
• Free built-in VPN with 50 GB of protected browsing a month and locations in over 20 countries
• Over 30,000 extensions
• Tab groups, reader mode, picture-in-picture and Firefox View
• Built-in PDF editing

Strengths and weaknesses

• Strength: The only major browser here with a free VPN built in
• Strength: AI features are optional and can be turned off entirely
• Strength: Syncs tabs, history and passwords across desktop, mobile and tablet
• Weakness: The free VPN has a 50 GB monthly allowance after the unlimited offer ends in January 2027
• Weakness: Newer Firefox releases no longer support Windows 8.1 or macOS 10.14 and older
• Weakness: No built-in ad blocker like Brave, Opera or DuckDuckGo

Key facts

• Price: Free
• Platforms: Desktop, mobile and tablet
• Built-in VPN: Free, 50 GB a month
• Extensions: Over 30,000
• Owner: Mozilla, a not-for-profit

Where it ranks

Mozilla Firefox is No. 3 in our Best Web Browsers verdict.