ABTalksABTALKS60-DAY CHALLENGE
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Day 36 of 60Web DevCore60–90 min Preview

Performance: measure first

Run Lighthouse on mobile throttling and write down your three worst metrics before changing a single line.

What this covers

  • Core Web Vitals
  • Profiling
  • Baseline measurement

Not yet unlocked

This day is still ahead of you. The task content is visible so you can preview what's coming, but submissions open when you reach Day 36.

Unlocks when you complete Day 35