My approach usually is to query as specifically as possible to avoid selector parsing; I still use getElementById a..twitter.com/i/web/status/8…2D
@kdzwinel First, slow down your server and make it respond only after 3s or so. Second, deliver an empty page and load all content via XHR.
@kdzwinel At least GTM makes it impossible to add render-blocking scripts… I see Optimizely on many customer pages—and it’s a perf killer :(
If late Web font discovery is one of your page’s performance issues, then resource hints are a possible answer—.twitter.com/i/web/status/8…zH7