🔎SEO & Analytics

Website Audit with AI: 230+ Rules for SEO, Performance, and Security

10 min read·March 10, 2026

Why a Website Audit is Essential

Your website is your most important marketing asset. But do you know whether it's technically sound? Slow load times cost you 7% conversion per second. Missing meta tags make you invisible to Google. Security vulnerabilities put your customers and your business at risk.

A professional website audit from an agency costs €1,000-€5,000. With the Website Audit Agent, you get it for 3 credits.


What the Website Audit Agent Checks

SEO (80+ Rules)

  • Title tags: Present, correct length (50-60 characters), includes keyword
  • Meta descriptions: Present, correct length (150-160 characters), includes CTA
  • H1-H6 hierarchy: Exactly one H1, logical structure
  • Image alt text: Descriptive, keywords used where appropriate
  • Internal linking: Sufficient, no dead ends
  • Canonical URLs: Correctly set, no duplicates
  • Robots.txt: Present, correctly configured
  • XML sitemap: Present, up to date, submitted to Search Console
  • Schema markup: Structured data for rich snippets
  • Hreflang: Correctly set for multilingual pages
  • URL structure: Clean URLs, no parameter duplicates
  • 301 redirects: No redirect chains, no loops
  • Keyword density: Natural, not over-optimized
  • Content length: Sufficient for the topic
  • Duplicate content: No internal or external duplicates
  • Thin pages: No pages with too little content

Performance (50+ Rules)

  • Core Web Vitals: LCP (<2.5s), FID (<100ms), CLS (<0.1)
  • Image optimization: WebP/AVIF format, correct sizes, lazy loading
  • Caching: Browser cache, CDN, service worker
  • Compression: Gzip/Brotli for HTML, CSS, JS
  • JavaScript: Async/defer loading, code splitting, tree shaking
  • CSS: Critical CSS inline, rest lazy loaded
  • Server: Response time under 200ms, HTTP/2 or HTTP/3

Security (40+ Rules)

  • HTTPS: Valid, correct redirect, HSTS header
  • Content Security Policy: XSS protection
  • X-Frame-Options: Clickjacking protection
  • Cookie security: Secure, HttpOnly, SameSite flags
  • Dependencies: No known vulnerabilities
  • Privacy: Cookie banner, GDPR compliance

Accessibility (30+ Rules)

  • WCAG 2.1 Level AA: Compliance check
  • Contrast: At least 4.5:1 for normal text
  • Keyboard navigation: All functions reachable via keyboard
  • Screen reader: ARIA labels, landmark roles
  • Alt text: Descriptive for all informational images

What You Get

  1. Score per category: 0-100 for SEO, performance, security, accessibility, mobile
  2. Prioritized issues: Critical → Important → Nice-to-have
  3. Concrete fix instructions: Exactly what to do, with code examples
  4. Quick wins: The 5 optimizations with the biggest impact

Conclusion

A website audit is the first step toward better rankings and more conversions. The Website Audit Agent makes it fast, thorough, and affordable.

Start your website audit now.


Further Reading

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