sure. it's an auditing tool, focusing on SEO, Accessibility, site speed, responsiveness and other factors. It generates an invaluable report on any site with the click of a button .. what's technically good about it, what's not good [and why], what you could/should address , and other stuff. it's very simple to use and one might say an essential tool if you're a web developer, oh and it's free + built into chrome already..
here's a guide I found on google which may be useful.
https://ignitevisibility.com/lightho...ome-extension/
or you can run it from command line + automate stuff / do batch jobs / reporting if you're uberGeek or need to do a lot of research [but the general use-case is just use it on 1 site at a time through chrome]
hope this helps..