Website Speed Audit — Free Performance Checker
Test website speed using Google PageSpeed Insights API. View Core Web Vitals scores and performance metrics.
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Understanding Core Web Vitals
Core Web Vitals are Google's key performance metrics: LCP (Largest Contentful Paint) measures loading speed, INP (Interaction to Next Paint) measures interactivity, and CLS (Cumulative Layout Shift) measures visual stability.
Frequently Asked Questions
The tool uses Google's PageSpeed Insights API to analyze any public URL. It returns a performance score (0-100) along with Core Web Vitals metrics.
Google's PageSpeed API has rate limits but does not require an API key for basic usage. Heavy usage may require a free Google API key.