PageSpeed / CWV Checker · Heavy
Core Web Vitals: find exactly what is slowing you down
Chexter calls the Google PageSpeed Insights API for both mobile and desktop versions, interprets Core Web Vitals, and produces a prioritized list of improvements.
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Methodology
How PageSpeed / CWV Checker works
Time until the largest visible element is rendered. Good: under 2.5s. Poor: over 4s.
Visual stability score — how much elements shift during load. Good: under 0.1.
Responsiveness: time from user interaction to next frame paint. Good: under 200ms.
Overall Lighthouse performance score (0–100) combining multiple metrics.
Specific files and elements slowing the page: unused JS, render-blocking resources, unoptimized images.
What PageSpeed / CWV Checker checks
Why use Chexter PageSpeed / CWV Checker
Frequently Asked Questions
What are Core Web Vitals?
Core Web Vitals are three Google metrics: LCP (loading), CLS (visual stability), and INP (responsiveness). They have been a ranking factor since 2021.
What LCP score is good?
Google considers LCP good under 2.5 seconds. 2.5–4s needs improvement. Over 4s is poor.
How is PageSpeed score calculated?
The score combines LCP, CLS, INP, FCP, TTFB, and Speed Index with weighted importance. LCP and CLS carry the most weight.
Does PageSpeed score directly affect rankings?
The score itself is not a ranking factor — the underlying Core Web Vitals metrics are. A good score correlates with good CWV.
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