audit-speed

Audit Core Web Vitals and page speed for LCP, CLS, and INP issues.

18|2|Updated Feb 27, 2026
One-click install
npx skills add https://github.com/calm-north/seojuice-skills --skill audit-speed
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: audit-speed
Source: https://github.com/calm-north/seojuice-skills/tree/main/skills/audit-speed
Command: npx skills add https://github.com/calm-north/seojuice-skills --skill audit-speed

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill diagnoses and resolves slow page load times and poor Core Web Vitals scores, directly impacting user experience and SEO rankings.

Core Features & Use Cases

  • Core Web Vitals Audit: Analyzes LCP, CLS, INP, FCP, and TTFB with clear thresholds.
  • Root-Cause Analysis: Provides diagnostic trees for identifying the specific reasons behind performance issues (e.g., slow server response, unoptimized images, render-blocking resources).
  • Resource Optimization: Offers actionable recommendations for improving HTML, CSS, JavaScript, image, and font performance.
  • Use Case: A user reports their website is slow. This Skill can pinpoint whether the issue is a slow server response, large unoptimized images, or excessive JavaScript, and provide specific steps to fix it.

Quick Start

Run a deep Core Web Vitals audit on the provided URL to identify performance bottlenecks.

Frequently Asked Questions about audit-speed

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

FAQPage Schema
How do I find the root cause of poor Core Web Vitals scores for my website?

A Core Web Vitals audit identifies root causes for poor LCP, CLS, and INP scores by analyzing resource breakdowns for HTML, CSS, JavaScript, images, and fonts. It pinpoints specific bottlenecks like slow server response or render-blocking resources.

What is the best way to fix slow page speed and unoptimized images?

Fixing slow page speed requires prioritizing resource optimization for HTML, CSS, JavaScript, images, and fonts. An audit provides diagnostic trees to identify unoptimized images and excessive JavaScript, offering actionable steps and quick wins to resolve them.

Can I run a performance audit on specific URLs to improve LCP and INP?

Yes, you can run a comprehensive performance audit on specific URLs to improve LCP and INP. The audit requires analysis of specific URLs and optionally accepts existing performance data to evaluate FCP and TTFB against clear thresholds.

What are the common reasons for high CLS and how do I diagnose layout shifts?

High CLS is often caused by render-blocking resources or unoptimized fonts. A page speed audit uses diagnostic trees to analyze these resource breakdowns, identifying the exact elements causing layout shifts and providing prioritized fixes.

Does a page speed audit analyze render-blocking CSS and JavaScript?

Yes, a page speed audit analyzes render-blocking CSS and JavaScript. It performs a comprehensive resource breakdown to evaluate these assets, identifying root causes for performance issues and offering prioritized fixes for optimization.

Why does my website experience slow server response times and high TTFB?

Slow server response times and high TTFB are diagnosed through a comprehensive page speed audit. The audit analyzes your HTML resource breakdown and uses diagnostic trees to pinpoint slow server response as the root cause, providing specific optimization steps.