Had no idea curl could do this. If you need a deeper dive, you can do something similar with headless chrome and the chrome remote dev tools protocol. There's

Had no idea curl could do this. If you need a deeper dive, you can do something similar with headless chrome and the chrome remote dev tools protocol. There's a good example with puppeteer, here: https://github.com/addyosmani/puppeteer-webperf#navigation-timing https://github.com/addyosmani/puppeteer-webperf#navigation-t... There are other snippets there that you can turn into text command line tools too.