Firefox start load time to end time for specifiy URL

Hi, I am trying to get bigfix report related firefox load time to end time for specify URL

Does anyone know the command for that report result?

An easy way to get web load stats from endpoints is to make a script using wget to tickle your intended url using the logging option (-a path\file.log). The output log has download stats that could be picked up in an analysis or a continue if statement.

Sample output:
2017-03-11 01:34:05 (140 KB/s) - `server.corp.com/data/somefile.html’ saved [11945515/11945515]

FINISHED --2017-03-11 01:34:05–
Downloaded: 2 files, 11M in 1m 23s (140 KB/s)

ok so what script to make it that well for bigfix?