Find out how much of your CSS/JS goes unused. Whopping 86% unused CSS here.
1. Open @ChromeDevTools
2. cmd+shift+p -> Show Coverage
3. Press 
In depth article coming soon!pic.twitter.com/GYf59PjXOd
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320KB can noticeably slow down page load if 1) user is on mobile with slow network connection 2) the page render is blocked on that CSS file
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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