PUBLIC MARKS from decembre with tags Request & firefox

The Developer Edition is the replacement for Firebug https://www.mozilla.org/en-US/firefox/developer/Yes, I know you can right click and copy the css or xpath, but thats not what I am asking. I am asking about the functionality that was provided by firefinder add on. Does FF offer that somewhere now that firebug was removed and added to the developer version.

An alternative or Update ? Rated 5 out of 5 stars by decembre on Feb. 21, 2018 · permalink When i write an Userstyle it is (was) the primary tool i use with Firebug. Now i search an alternative for this great tool: The devtool don't give us the possibility to search or test a specific CSS selector like Firepath do. And in an other hand the DevTool is less useful than Firebug (it don't give an easy way to identify in which userstyle a CSS rule is - with an human reading way)

No favorite button in new AMO design?

Add, modify and filter http request headers. You can modify the user agent string, add headers to spoof a mobile request (e.g. x-up-calling-line-id) and much more. Take a look at the help tab of the Modify Headers window...

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