Core Web Vitals Batch Checker
Run real Lighthouse audits on up to 5 URLs at once. Compare performance metrics and export to CSV.
| URL | Perf. Score | FCP | LCP | TBT | CLS |
|---|
About the Core Web Vitals Batch Checker
The Core Web Vitals Batch Checker by Grab-Kit is a free online tool designed for SEO specialists, webmasters, and frontend developers. Google's Core Web Vitals (First Contentful Paint, Largest Contentful Paint, Total Blocking Time, and Cumulative Layout Shift) are critical ranking factors for SEO. Testing multiple pages one by one in Lighthouse is incredibly time-consuming. Our tool allows you to batch-test up to 5 URLs simultaneously, pulling real Lighthouse data directly from the official Google PageSpeed Insights API.
Using the tool is incredibly straightforward. Paste up to 5 URLs into the input box (one per line), select whether you want to audit for Mobile or Desktop, and click "Run Lighthouse Batch". The tool queries Google's servers, runs real headless Chrome audits, and populates a clean, comparative table. Color-coded scores (Green, Orange, Red) instantly show you which pages need optimization. Once the audit is complete, you can export the entire dataset to a CSV file with a single click, perfect for sharing with your development team.
Why use Grab-Kit?
All our tools run entirely in your browser. This tool uses the public Google PageSpeed API to fetch official Lighthouse metrics without requiring any API keys or signup. It is completely free, secure, and works flawlessly on desktop and mobile devices, making it the perfect utility for your technical SEO workflow.