Before Firefox 23
In Firefox 22, the developer tools offered a few neat tools.
One of the features I like is the search capabilities.
Firefox 23 Network Panel
Starting with the release of Firefox 23, there is now a network panel showing the HTTP transactions between the client and the server.
Something not obvious in the UI but to have more information about a specific resource, you need to click on it. Then a secondary panel will appear giving additional information. The information is common: status, success, size, timing, etc. A neat thing is the possibility to search through HTTP headers.
- Once we start sort by one of the columns, there is no way to come back to the initial view except reloading the page to see again the cascade.
- It's impossible to copy and paste the information of a line and/or its associated request/response headers. That could be very practical for sharing in a bug report or an email.
- It's not possible to craft your own network request and sees its effect.
- Finally one very useful thing that is available on Opera Dragonfly, the fact that you can create a custom profile to be reused by your requests. It's a gem for studying user agent sniffing.
Good work to the Developer Tools team.