CLI Tool

Web Vitals CLI

CLI for measuring Core Web Vitals (LCP, FID, CLS) critical for SEO performance.

9

Installation

npm install web-vitals
Platform
Claude Code, VS Code
Pricing
free
Last Tested
2026-04-01

About this Tool

Google's web-vitals library provides CLI-accessible measurement of Core Web Vitals metrics including Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). These metrics directly impact Google Search rankings. Essential for marketing teams optimizing landing page performance.

Use Case Examples

  • Measure Core Web Vitals on landing pages to improve SEO rankings
  • Track LCP and CLS metrics before and after page optimizations
  • Monitor performance regressions that could impact search visibility

Compare Web Vitals CLI

Score Breakdown

9

Overall Score

Based on 5 dimensions

Installation
9/10
Documentation
9/10
Relevance
9/10
Quality
9/10
Maintenance
10/10

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