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debug-optimize-lcp

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About debug-optimize-lcp

D

debug-optimize-lcp

Guides debugging and optimizing Largest Contentful Paint

debug-optimize-lcp is an agent skill for finding and fixing slow Largest Contentful Paint, the Core Web Vital that measures how quickly a page's main content becomes visible. It uses the Chrome DevTools MCP tools to measure a page. LCP is the time from navigation start until the largest image or text block renders in the viewport. The skill uses the published thresholds: 2.5 seconds or less is good, 2.5 to 4.0 seconds needs improvement, and more than 4.0 seconds is poor. It explains that LCP is a Core Web Vital that affects user experience and search ranking, and notes that on 73 percent of mobile pages the LCP element is an image. Every LCP breaks down into four sequential parts with no gaps or overlaps. The skill's approach is to find which part is the bottleneck, because that is where optimization pays off. The skill is triggered when a user asks about LCP performance, and it applies to any web page you can open in Chrome through the MCP server. It is published in the chromedevtools/chrome-devtools-mcp repository, which has about 53,600 stars on GitHub.

View debug-optimize-lcpAll AI Skills apps
Price
Free
Made by
chromedevtools
Category
AI Skills
Website
github.com/chromedevtools/chrome-devtools-mcp/debug-optimize-lcp