Firefox Screenshot Command

I needed to capture a HiDPI screenshot in Firefox without switching to a device with a HiDPI display. I was wondering if that was even possible. While searching for a how-to, I came across this :screenshot web console helper function.

How is it that I didn’t know about it for so many years? 🤯

This function has been in existence for about 7-8 years. And it has a bunch of handy options.