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Angular FAQ: Top Questions

50. How to optimize Angular applications for performance?

  • Use OnPush change detection to reduce checks.
  • Lazy load feature modules.
  • Avoid unnecessary DOM manipulation and event listeners.
  • Use trackBy in *ngFor to minimize re-rendering.
  • Enable AOT compilation for production builds.
  • Minimize bundle size with Angular CLI and Webpack optimizations.

ng build --prod --aot --optimization
        

Tools like Lighthouse and Angular DevTools help profile and monitor performance.