ABTalksABTALKS60-DAY CHALLENGE
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Day 37Day 39
Day 38 of 60Web DevCore60–90 min Preview

Image and asset optimisation

Serve responsive images with correct sizes, modern formats, and explicit dimensions to kill layout shift.

What this covers

  • srcset and sizes
  • Modern formats
  • CLS prevention

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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 38.

Unlocks when you complete Day 37