Developer Tools

You don't know the firefox toolbar

3 minute read Published:

The unknown magic in the toolbar
I had no idea that firefox had this little command line toolbar but damn does it pack a punch. Docs can be found here. A small selection of things you can do through the command line is take a screenshot of the whole page, highlight all nodes that match a selector, emulate media types, inject libraries directly into the page, and log all function calls to the console.You can even create your own commands which I’ll get into at the end.