Firefox PoC: rapid history extraction through non-destructive cache timing

This is a Firefox version of my cache timing script. According to a short survey shown at the end of the test, the script currently works for around 84% of all survey-takers. The use of script blockers, having unusually slow or unusually fast hardware, or doing computationally expensive work in the background, seem to be the primary reasons for failure.

Please refer to the top-level page for more information about the purpose and the design of this tool.

Note: As of December 2011, I am no longer updating the URLs tested by this script. Since the sites have since moved to new versions of their CSS and JS scripts, this page won't work. On top of this, it looks like the Firefox detection approach is obsolete; try the Chrome version instead.

The sites you have visited in the past day or so are shown in green; gray indicates a site not found in your cache: