Captive portal detection
Description of how Firefox detects captive portal networks.
Firefox Translation
The built-in Firefox full page translation feature allows you to seamlessly browse the web in your preferred language. Learn more.
Firefox Review Checker - Ensure review authenticity in your online shopping
See how reliable product reviews are when you shop online using Review Checker in Firefox.
Firefox DNS-over-HTTPS
DoH improves privacy by hiding domain name lookups from anyone lurking on public Wi-Fi, your ISP or others on your local network. Learn more.
DNS-over-HTTPS (DoH) FAQs
We have outlined a list of FAQs here that you may find helpful while getting up to speed with all that DNS-over-HTTPS (DoH) has to offer.
Why do I get a harmful download message when downloading Firefox on Windows?
You may see a warning that the installer could harm your device when attempting to download Firefox from another browser. Learn more.
Where to go for developer support
Got a web development question? Need help with Developer Edition? MDN Web Docs has all the resources you need to help build a better web.
Text Encoding no longer available in the Firefox menu panel
The Firefox menu panel no longer has a Text Encoding submenu. It is still available in the Menu bar View menu and as an optional toolbar button.
Copy text from images on Firefox for MacOS
Learn how to copy text from images in Firefox for MacOS.
What is Mozilla Connect?
Mozilla Connect is a space to give product feedback, share ideas for new features, and participate in conversations about Mozilla products.
Firefox update notifications on Windows
Learn about update notifications on Windows that let you know when a brand-new Firefox version is available, even if Firefox is closed.
Mozilla Social FAQ
Mozilla has launched Mozilla.social, a publicly accessible instance in the Fediverse on Mastodon.