FrontendHaltPerformance·Intermediate·Conceptual·1 min read
Does moving work to a Web Worker help INP?
Short interview answer
It can, for pure computation that doesn't need the DOM, because it frees the main thread so the handler and paint aren't blocked. It doesn't help if the expensive part is DOM manipulation or rendering, which must stay on the main thread.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.