Just after the release of Firefox 10 stable, Mozilla has pushed another version for public testing, Firefox 11 BETA 1, that comes with exciting developer-oriented features.
The new interesting addition, Page Inspector 3D View, allows one to visualize a site from its components point-of-view, displaying its various pieces just like a building, with 3D components on top of others, probably designed for a better understanding of how web-sites work, what is the relationship between an x element and other y element, what is the percentage of resources used in that particular site, complete web-sites explorations (are there elements outside of this page?) and more.
Page Inspector 3D View has its roots in an add-on, Tilt (the 3D part), furthermore adding extra functionalities.
How do we use Page Inspector 3D View?
The computer must be WebGL-capable (consequently a 3D button will be displayed on the toolbar, located at the bottom of the page).
Open a web-page, right-click inside the page and select Inspect Element, then just press 3D.
Mozilla Firefox 11 BETA 1 has already landed in Ubuntu 12.04 LTS and is available via its official BETA PPA (Lucid, Maverick, Natty, Oneiric)
sudo add-apt-repository ppa:mozillateam/firefox-next
sudo apt-get update
sudo apt-get install firefox