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web-performance-analysis

Analyze web performance issues with PageSpeed Insights and Lighthouse data.

1|Updated Jan 31, 2026
Search Tags:#Lighthouse#analyze#web-performance#performance-audit#PageSpeed Insights#Next.js-15#CWV
One-click install
npx skills add https://github.com/SilverAssist/performance-toolkit --skill web-performance-analysis
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: web-performance-analysis
Source: https://github.com/SilverAssist/performance-toolkit/tree/main/src/templates/skills/web-performance-analysis
Command: npx skills add https://github.com/SilverAssist/performance-toolkit --skill web-performance-analysis

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps engineers diagnose slow pages and optimize performance using PageSpeed Insights, Lighthouse, and Core Web Vitals, with Next.js 15-specific guidance.

Core Features & Use Cases

  • PSI/LHCI-based audits to identify performance bottlenecks
  • Core Web Vitals optimization guidance for LCP, FCP, CLS, and TBT
  • Next.js 15 specific patterns and best practices for improved performance
  • Actionable improvement plans and checklists for developers

Quick Start

Run a baseline audit on a sample URL and review the PSI/LHCI results to identify recommended optimizations.

Frequently Asked Questions about web-performance-analysis

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I analyze web performance issues using PageSpeed Insights and Lighthouse?▼

Use this Skill to analyze web performance by running baseline PSI and Lighthouse audits on your URLs. It identifies bottlenecks and provides actionable improvement plans and checklists for developers.

How do I optimize Core Web Vitals metrics like LCP and CLS in a Next.js 15 project?▼

Apply Next.js 15 specific patterns and best practices to optimize Core Web Vitals. This Skill provides guidelines and thresholds to improve LCP, FCP, CLS, and TBT metrics across your development environments.

Can I conduct performance audits on Next.js 15 applications across different environments?▼

Yes, you can conduct performance audits on Next.js 15 projects across development, staging, and production environments. The Skill provides specific optimization patterns to implement in code and configuration.

What is the best way to debug slow pages using Lighthouse data?▼

Use PSI and Lighthouse data to debug slow pages by identifying performance bottlenecks. This Skill translates audit data into actionable improvement plans and Next.js 15 optimization guidelines.

Do I need specific thresholds to improve Core Web Vitals for my website?▼

Yes, specific thresholds are needed to improve Core Web Vitals. This Skill provides the necessary guidelines and thresholds to measure and optimize LCP, FCP, CLS, and TBT metrics for your web pages.

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