Firebug monitors network conditions
Firebug's official website announced that it has ceased further development, updates, and maintenance of Firebug, inviting everyone to use Firefox's built-in tools.DevTools。
Firebug can monitor the loading time of every file on a webpage.
Open Firebug. Click "Network", then make sure it is enabled, and reload the current page. Firebug displays as shown below:
