Firefox increasing rate since Firefox 1.0 was released on November 9, 2004, and Firefox had already been downloaded over one billion times. This number does not include downloads using software updates or those from third-party websites. They do not represent a user count, as one download may be installed on many machines, one person may download the software multiple times, or the software may be obtained from a third-party. In July 2010, IBM asked all employees (about 400,000) to use Firefox as their default browser. Firefox was the second-most used web browser until November 2011, when Google Chrome surpassed it. According
Web Components are inside a template will not be fetched until the template is stamped out. HTML Templates are supported in Google Chrome, Mozilla Firefox, Microsoft Edge, Safari, and Opera. Support for an early version of Custom Elements and Shadow DOM, known as "v0", is present in some Blink-based browsers like Google Chrome and Opera and is in Mozilla Firefox (requires a manual configuration change). The newer Custom Elements and Shadow DOM "v1" APIs are being implemented in Safari 10, Google Chrome (53.0.2785), and under development in Mozilla Firefox. Microsoft Edge did not implement Custom Elements or Shadow DOM. Backward compatibility with