← Your Lighthouse Score Is 100. Long Animation Frames Explain the Jank.Quiz

Long Animation Frames — test yourself

Eight questions on why the older Long Tasks API couldn't name a culprit, what the Long Animation Frames API adds, how to read its attribution data, and where it connects to INP.

questions8

pass mark70%

resultsat the end

No account needed. Answer all 8 questions, then see your score with every answer explained and a reference to the spec or MDN — pass and you can claim a certificate.