I wish there was a tool that could follow a browser session and tell me what, specifically, I hadn't used in my bootstrap CSS. Or a tool that could similarly t

I wish there was a tool that could follow a browser session and tell me what, specifically, I hadn't used in my bootstrap CSS. Or a tool that could similarly tell me which parts of JQuery I could just delete. I feel the sites I have produced are fairly trim and optimised, with the exception of the CSS and JS. Sites like https://www.lfgss.com/ https://www.lfgss.com/ Yes they're responsive, and they load fairly fast, and they're encumbered with web fonts... but it's the CSS and JS that is the real bloat.