It turns out Google Chrome ships a default, hidden extension that allows code on `*.google.com` access to private APIs, including your current CPU usage
You can test it out by pasting the following into your Chrome DevTools console on any Google page:
chrome.runtime.sendMessage(
"nkeimho...
I use both for my job and my subjective feeling is that chrome is faster. Js benchmarks seems to confirm it. Privately I use Firefox 95% of the time but I understand people who stay on chrome just out of inertia.
I'm a Firefox user on desktop and mobile, and I definitely feel like Chrome is faster on both platforms when I (have to) use it. But I prefer Firefox for the ideology and dev tools (on desktop), since I'm a web developer by trade, so the dev tools make a big difference for me.
There was a short period a few years ago after the Quantum update that I would have partially agreed, because Firefox's renderer was much smoother. But Chrome seems to have caught up, because it's been much faster every time I test something in it in the yesrs since.