Phase 11 · Next.js

Topics

Image Optimization

Part of the Frontend Developer Roadmap.

Summary

The built-in `next/image` component that automatically resizes, lazy-loads, and serves images in modern formats for better performance.

How to Learn This

  • 1Replace a plain `<img>` tag with `next/image` and compare the network payload.
  • 2Learn the `priority` prop for above-the-fold images — it skips lazy loading.
  • 3Configure `remotePatterns` in `next.config` to allow external image domains.
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