Core Web Vitals

Real Core Web Vitals & performance for a page — FREE, no credits. Runs Google PageSpeed Insights (Lighthouse lab data + real-user CrUX field data): LCP, CLS, INP/TBT, a 0–100 performance score, and the top opportunities to make the page faster. It works as a quality gate when a website is built or fixed. strategy: 'mobile' (default) or 'desktop'. resources=true adds Lighthouse's RAW RESOURCE LISTS, which turn a score into concrete work: which stylesheets block rendering, which files carry unused CSS or JS and how many bytes of each are wasted, which images are oversized or not in a modern format, the full network request list, and the LCP element itself. Without it you know a page needs "less unused CSS" but not which file, so critical CSS cannot be targeted and an oversized image cannot be found. limit = rows per audit (0 = all rows Lighthouse reports).