Mozilla Firefox has reached the 35 release which brings improved “Hello” video chat tool, built-in support for H.264 on OS X via native APIs, improved high quality image resizing performance, support for the CSS Font Loading API, updated PDF.js, and numerous other changes.

Here’s the full list of changes (via the official release note):

• Firefox Hello with new rooms-based conversations model
• New search UI improved and enabled for more locales
• Access the Firefox Marketplace from the Tools menu and optional toolbar button
• Built-in support for H264 (MP4) on Mac OS X Snow Leopard (10.6) and newer through native APIs
• Use tiled rendering on OS X
• Improved high quality image resizing performance
• Improved handling of dynamic styling changes to increase responsiveness
• Implemented HTTP Public Key Pinning Extension (for enhanced authentication of encrypted connections)
• Added support for the CSS Font Loading API
• Resource Timing API implemented
• CSS filters enabled by default
• Changed JavaScript ‘let’ semantics to match the ES6 specification
• Support for inspecting ::before and ::after pseudo elements
• Computed view: Nodes matching the hovered selector are now highlighted
• Network Monitor: New request/response headers view (more info)
• Added support for the EXT_blend_minmax WebGL extension
• Show DOM Properties context menu item in inspector
• Reduced resource usage for scaled images
• PDF.js updated to version 1.0.907
• Non-HTTP(S) XHR now returns correct status code
• Various security fixes

Upgrade Firefox in Ubuntu:

For Ubuntu 12.04, Ubuntu 14.04, and Ubuntu 14.10, Firefox 35 will be soon made into the official Ubuntu repositories, available for upgrade through the Software Updater: