Firefox 38 Esr New! | Download

Support for encrypted HTML5 video and audio playback began for Windows Vista and later. System Requirements for Version 38

Implemented the srcset attribute and element, allowing websites to serve different images based on device resolution. download firefox 38 esr

Firefox 38 ESR introduced several milestones in web technology that remain relevant for legacy system testing and specialized use cases: Support for encrypted HTML5 video and audio playback

Because this is an older release, it is no longer available on the primary Firefox download page. To obtain it safely: Firefox ESR 140.0esr System Requirements — Firefox.com and Pango 1.14 or higher.

Native HTML5 playback on YouTube was enabled for Mac OS X, reducing reliance on third-party plugins.

Enhanced rendering for Asian typography was integrated.

Requires GTK+ 2.18, GLib 2.22, and Pango 1.14 or higher.