Dynamic speed increases can be obtained with Firefox's unique pre-fetching mechanism, which recycles idle bandwidth by silently loading and caching all of the links on the page you are browsing.

Fasterfox allows you to tweak many network and rendering settings such as simultaneous connections, pipelining, cache, DNS cache, and initial paint delay. The program includes a millisecond accurate page load timer tests the effectiveness of your settings, along with a pop-up blocker for pop-ups initiated by Flash plug-ins.

By default, Firefox prefetches links which are explicitly marked by the web page designer to be prefetched. This is seldom done in practice, so you rarely benefit from it. Fasterfox's "Enhanced Prefetching" causes all of the links on the page to be eligible for prefetching, which leads to a very noticeable difference in snappiness while surfing the web.