FrontendHaltBrowser internals·Intermediate·Conceptual·1 min read
What is the critical rendering path?
Short interview answer
It is the work needed to turn critical resources into the initial render: document parsing, blocking styles, necessary scripts, font and image decisions, style, layout, and paint. Optimize dependencies and priority, not just individual file size.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.