How to increase code fonts in Firefox developer tools? I know that there is a zoom function but I want to set the font size only for the code.
As John said, the way to increase the font-size in the devtools is to use ctrl/cmd+, just like you would on a web page. In fact the devtools is a webpage. You just need to make sure that the devtools frame is focused first.
I'm afraid there's no way to only increase the font-size for the code right now.