Comprehensive web quality audit covering performance, accessibility, SEO, and best practices. Use when asked to "audit my site", "review web quality", "run lighthouse audit", "check page quality", or "optimize my website".
Comprehensive quality review based on Google Lighthouse audits. Covers Performance, Accessibility, SEO, and Best Practices across 150+ checks.
Core Web Vitals — Must pass for good page experience:
Resource Optimization:
srcset.@import.font-display: swap. Preload critical fonts. Subset to needed characters.Loading Strategy:
<link rel="preconnect"> for third-party domains.Perceivable:
<img> has meaningful alt text. Decorative images use alt="".Operable:
Understandable:
lang attribute on <html>.Robust:
Crawlability:
On-Page SEO:
<h1>. Logical heading structure.Technical SEO:
Security:
Modern Standards:
document.write, synchronous XHR, etc.<!DOCTYPE html>.<meta charset="UTF-8"> as first element in <head>.UX Patterns:
| Level | Description | Action |
|---|---|---|
| Critical | Security vulnerabilities, complete failures | Fix immediately |
| High | Core Web Vitals failures, major a11y barriers | Fix before launch |
| Medium | Performance opportunities, SEO improvements | Fix within sprint |
| Low | Minor optimizations, code quality | Fix when convenient |
When performing an audit, structure findings as:
## Audit results
### Critical issues (X found)
- **[Category]** Issue description. File: `path/to/file.js:123`
- **Impact:** Why this matters
- **Fix:** Specific code change or recommendation
### High priority (X found)
...
### Summary
- Performance: X issues (Y critical)
- Accessibility: X issues (Y critical)
- SEO: X issues
- Best Practices: X issues
### Recommended priority
1. First fix this because...
2. Then address...
3. Finally optimize...
For detailed guidelines on specific areas: