Critical Rendering Path
In plain terms
The sequence of steps a browser takes to render a page.
Going deeper
The critical rendering path is how the browser turns HTML, CSS, and JS into pixels; optimizing it speeds up first paint. Render-blocking resources slow it down.
Under the hood
Minimizing render-blocking CSS/JS and prioritizing above-the-fold content improves perceived load time.
Examples
Performance optimization, deferring scripts, inlining critical CSS, faster first paint.
Think of it like...
Like the assembly line from raw parts to the finished, visible page.