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Core Web Vitals Test
Check Core Web Vitals and compare metrics for desktop and mobile devices.
Test your website performance using our Chrome extension. Check Core Web Vitals and compare metrics for desktop and mobile devices. Optimize your website performance, improve user experience and achieve SEO goals.
⨠How to use this extension
1. š ļø Install the extension.
2. š Navigate to the web page you want to analyze.
3. š±ļø Click on the extension icon.
4. š» The Core Web Vitals test will calculate metrics for desktop.
5. š± Click the "Mobile" button to calculate metrics for mobile devices.
6. š Click the "Desktop" or "Mobile" button to recalculate the metrics.
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About this launch
Core Web Vitals Test by Denis G. Will be launched December 23rd 2025.