Browser console but also on network as well.
I've found out that firefox DOES have a console log for all of its tabs (this means if you have multiple tabs and they are on websites that uses the console.log javascript command, all the logs from the tabs having the javascript code will be logged here in one place).
I would like this “entire-browser” feature to also apply to “network” too, meaning if you have multiple tabs, and they are on websites that load off-page URLs (such as images), these network data will be logged here in one place.