Browser & Web Performance · Senior · Question 12 of 75

What does 'layer explosion' refer to?

1A crash in the GPU process
2A CSS z-index bug that hides content
✓Correct answer: Too many compositor layers created (often by overlap or will-change), wasting memory and compositing time

Explanation

An element above a promoted layer may need its own layer too, so layers can multiply. DevTools Layers panel helps find them.

Further reading

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