Firefox 28 was released on March 18, 2014. It added support for VP9 video decoding and support for Opus in WebM.[142] For Android, features such as predictive lookup from the address bar, quick share buttons and support for OpenSearch were added.[143]
Firefox 28.0.1 was released only for Android six days later. It fixed H.264 video playback issues on several Galaxy devices and includes a mobile-only security fix for file: URLs.[144]