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What is the critical render path and how does Angular handle font and style optimization?

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01

Understand the problem

Describe optimization options like CSS inlining and prefetching.

performanceoptimization
02

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03

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During production builds, Angular optimizes the critical path by inlining critical styles directly into index.html and preconnecting to/prefetching fonts. In SSR setups, it serializes style dependencies to avoid blocking rendering.

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04

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Visual representation of build compiled inlined index.html output
<!-- Compiled dist/index.html output -->
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>App</title>
  <base href="/">
  <style>body{margin:0;font-family:Roboto}h1{color:#333;margin-top:20px}</style>
  <link rel="stylesheet" href="styles-lazy-bundle.css" media="print" onload="this.media='all'">
</head>
<body>
  <app-root></app-root>
</body>
</html>
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