Check Your Angular App Speed
Run a Lighthouse audit on your Angular application and export the full JSON report. Use it with ChatGPT, Claude, or Cursor to find bundle size issues, hydration problems, and Core Web Vitals failures specific to Angular.
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Loading...Common performance issues on Angular sites
These are the issues most frequently found in Angular Lighthouse audits. Your report will tell you exactly which ones apply to your site.
Large initial JavaScript bundle
Angular applications shipped without proper lazy-loading for feature modules can produce 500KB+ initial bundles, severely delaying LCP and inflating TBT.
Slow LCP from client-side rendering
Angular apps using only client-side rendering (default) delay LCP because nothing renders until Angular bootstraps. Migrating to Angular Universal (SSR) dramatically improves LCP.
Change detection overhead
Default zone.js-based change detection runs on every async event, causing expensive re-renders that increase TBT. Components using OnPush or signal-based reactivity perform significantly better.
Render-blocking third-party scripts
Scripts injected via Angular's index.html <head> without defer or async block rendering and add to TBT.
Pro tip: Enable Angular's built-in image directive (@angular/common NgOptimizedImage) to get automatic WebP serving, explicit width/height attributes, and LCP preload hints with zero additional configuration.
Want a detailed tutorial? Read our step-by-step performance fix guide →