Check Your Vue.js App Speed
Run a Lighthouse audit on your Vue.js application and export the full JSON report. Use it with ChatGPT, Claude, or Cursor to fix bundle issues, hydration mismatches, and Core Web Vitals problems in Vue.
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Loading...Common performance issues on Vue sites
These are the issues most frequently found in Vue Lighthouse audits. Your report will tell you exactly which ones apply to your site.
Large JavaScript bundle from synchronous imports
Vue apps that import all components synchronously produce large bundles. The "Reduce unused JavaScript" audit identifies which imports to convert to defineAsyncComponent() or route-level lazy imports.
Poor LCP from client-side rendering
Vue SPA (without Nuxt or SSR) renders nothing until the JavaScript loads and executes. The result is LCP often exceeding 4 seconds on average connections.
Layout shift from async component loading
When async components load in, they can shift existing content if the container has no reserved dimensions — a common source of high CLS in Vue apps.
Vue Router navigation blocking main thread
Complex navigation guards or synchronous data fetching on route change can create long tasks that block the main thread and increase TBT.
Pro tip: Use Nuxt.js instead of plain Vue for automatic SSR, route-based code splitting, and built-in image optimization. If you must use plain Vue, add @vue/server-renderer for SSR and vite-plugin-vue-package-size-analyzer to identify bundle bloat.
Want a detailed tutorial? Read our step-by-step performance fix guide →