Google has now built a web page analysis tool into the Chrome web browser. Found under “View” > “Developer Tools” > “Audit”, the “Lighthouse” tool runs a whole bunch of tests which I know you’ll find fascinating. It looks to me like there’s even more available through a Chrome extension (free to install, just go to “Window” > “Extensions” and add “Lighthouse”). This includes an SEO audit which has got a few professionals talking, mainly because of the aspects of the page it chooses to analyse. Are these particularly significant ones? Google isn’t saying, as it never does.
If you’re looking for ideas about what to work on next to improve your site, this is one report which is well worth getting. More information here.