> For the complete documentation index, see [llms.txt](https://consumer-trust-initiative.gitbook.io/consumer-trust-initiative-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://consumer-trust-initiative.gitbook.io/consumer-trust-initiative-docs/5.2-metric-mobile-performance.md).

# 5.2 Metric: Mobile Performance

Mobile traffic now constitutes the majority of web usage. A high-performing mobile experience is not a luxury; it is a requirement. We use Google's own Core Web Vitals (CWV) as the primary benchmark.

* **Largest Contentful Paint (LCP):** Measures loading performance. To provide a good user experience, LCP should occur within 2.5 seconds of when the page first starts loading.
* **Interaction to Next Paint (INP):** Measures interactivity. A good INP is considered to be below 200 milliseconds.
* **Cumulative Layout Shift (CLS):** Measures visual stability. A good CLS score is 0.1 or less.

Platforms that pass all three CWV assessments on mobile receive the maximum score.


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