Firefox is an easy and open development platform to build fast, powerful and beautiful mobile web apps and add-ons. Use the latest web technologies like HTML5, CSS and JavaScript to innovate faster, more easily and extend your reach. You can build great sites and apps by tapping into the device capabilities of the phone, as well as create game changing add-ons. Visit the Mobile Developer Network to learn more about how you can build and showcase your innovations on millions of devices.

Build add-ons for mobile

Although Firefox for the desktop and mobile are built on the same technology platform, there are differences that will require developers to make changes to their add-ons in order to become compatible with Firefox 4 Beta for Android and Maemo. Visit the Electrolysis and Add-ons wiki page and the Add-ons Training Week documentation to learn more.

The same browser engine as Firefox 4.0 beta for desktop

Fast JavaScript engine, using Mozilla’s “JaegerMonkey” just-in-time compiler

Leading Web compatibility

Engine optimized for ARM processors

Location-Aware Browsing

Web workers



Offline storage



<canvas>



<svg>



<audio>

<video>

What’s under the hoodHTML5 Technologies:Native JSON