The Firefox 15 web browser was officially released yesterday, August 28th, bringing initial native support for PDF files, support for version 3 of the SPDY networking protocol, better performance, by enhancing WebGL with compressed textures, otimized add-ons to eat less memory, integrated JavaScript debugger into developer tools, a new layout view to Inspector, implemented the CSS word-break property, implemented high precision event timer, a new responsive design tool, to allow web developers to easily switch between mobile and desktop views of sites, native support for the Opus audio codec, media attribute support to the element, and support for the played attribute to the <video> and <audio> elements.