web-quality-audit

Audits web pages for performance, accessibility, SEO, and best-practice issues using Lighthouse-based checks.

Updated Aug 8, 2026
One-click install
npx skills add https://github.com/wolfstar-project/code-zero --skill web-quality-audit-wolfstar-project
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: web-quality-audit
Source: https://github.com/wolfstar-project/code-zero/tree/main/.agents/skills/web-quality-audit
Command: npx skills add https://github.com/wolfstar-project/code-zero --skill web-quality-audit-wolfstar-project

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires jq, and includes scripts (resource) components.

What problem does it solve? Web projects often ship with hidden performance regressions, accessibility barriers, SEO gaps, and security misconfigurations that hurt user experience and search rankings. This Skill systematically reviews code and HTML against 150+ Lighthouse-based checks and produces prioritized, actionable findings. ## Core Features & Use Cases - Four-Category Audit: Covers Performance (Core Web Vitals, resource optimization), Accessibility (WCAG perceivable/operable/understandable/robust), SEO (crawlability, on-page, technical), and Best Practices (security, modern standards). - Severity-Ranked Output: Classifies findings as Critical, High, Medium, or Low with file locations, impact explanations, and concrete fix recommendations. - Automated HTML Analysis: Includes a read-only shell script that scans HTML files for missing doctype, viewport, lang attributes, alt text, and non-HTTPS URLs, outputting structured JSON. - Use Case: Before a product launch, run the audit against your site's HTML output to catch missing alt attributes, mixed-content HTTP links, and absent meta tags, then fix Critical and High issues before deploy. ## Quick Start Audit the HTML files in my project's dist folder for quality issues and give me a prioritized list of fixes.

Frequently Asked Questions about web-quality-audit

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

FAQPage Schema
How do I audit my website for performance and accessibility issues?▼

Run the audit against your HTML files or project directory to check 150+ Lighthouse-based criteria across Performance, Accessibility, SEO, and Best Practices. Findings are grouped by severity with specific file locations and fix recommendations.

What does the analyze script check in HTML files?▼

The script checks for missing HTML5 doctype, UTF-8 charset, viewport meta tag, lang attribute, title tag, img elements without alt text, and non-HTTPS URLs. It outputs structured JSON with issue counts and line numbers, and requires jq to be installed.

Does the audit script modify my files?▼

No, the analyze script is strictly read-only and performs no filesystem mutations. It only reads HTML files and writes human logs to stderr and structured JSON results to stdout.

What are the Core Web Vitals thresholds for a passing audit?▼

Largest Contentful Paint must be under 2.5 seconds, Interaction to Next Paint under 200 milliseconds, and Cumulative Layout Shift under 0.1. Failing any of these is classified as a High severity finding that should be fixed before launch.

Why does Lighthouse v13 report different audit names than older versions?▼

Lighthouse v13 migrated Performance audits to Performance Insight Audits, merging checks like CLS culprits and image delivery into consolidated insights. The underlying optimization advice is unchanged; treat older Lighthouse JSON output as a superset rather than a contradiction.