When we audit a website, we don't settle for surface-level tests. We run 100+ checks spread across five areas: SEO, Schema.org, site health, performance and security. Here is the complete list — the same checklist we use for our clients.
1. SEO audit
Basic and advanced SEO checks that affect how search engines index and rank the site.
- Title tag — present, correct length, unique per page
- Meta description — present and correct length
- H1 tag — present, only one per page, contains keywords
- Heading hierarchy — logical order H1→H2→H3
- Alt attributes on images — missing or not descriptive
- Canonical URL — present and pointing correctly
- Hreflang tags — for multilingual sites
- Open Graph tags — og:title, og:description, og:image
- Twitter Card tags
- Robots meta — checking for noindex/nofollow
- URL structure — readable and SEO-friendly slugs
- Internal linking — orphan pages, broken links
- External links — broken and nofollow handling
- Sitemap.xml — present, validates, complete
- Robots.txt — present with correct directives
- Mobile-friendliness — viewport, responsive design
- Keyword density — placement and balance
- Content length — quality signals
- Duplicate content — detection
- Redirect chains — 301/302 redirect chains
2. Schema.org audit
Structured data that gives search engines extra context — and can result in rich snippets in search results.
- JSON-LD syntax — valid JSON-LD
- Schema type correctness — Organization, LocalBusiness, Product, Article etc.
- Required properties — per schema type
- Google Rich Results — eligible for enhanced search results
- Breadcrumb markup
- FAQ markup
- HowTo markup
- Review/Rating markup
- Product markup — price, availability, SKU
- Article markup — headline, datePublished, author
- Event markup
- Video markup
- Sitelinks Searchbox markup
- Logo and contact markup
- Social profile links
- Nested entities — @id referencing
- Deprecated properties
- Google Search Console warnings — matching
3. Site health
Basic quality checks that affect usability, crawling and overall impression.
- Broken links — 4xx errors
- Server errors — 5xx
- Redirect chains and loops
- Mixed content — HTTP resources on HTTPS pages
- Favicon — missing
- Custom 404 page
- Sitemap vs actual pages — discrepancies
- Orphan pages — no internal links pointing to them
- Crawl depth — pages more than 3 clicks from homepage
- Duplicate titles and descriptions
- Thin content — pages with <300 words
- HTML validation — W3C standard
- CSS validation
- Viewport configured
- Language declaration — html lang attribute
- Character encoding — UTF-8
- Print stylesheet
- DNS resolution time
4. Performance audit
Fast sites rank better and convert more. We test everything that affects loading time and perceived speed.
- Loading times — TTFB, FCP, LCP
- Core Web Vitals — LCP, INP, CLS
- Total page size — KB/MB
- Number of HTTP requests
- Image optimization — format, compression, dimensions
- Modern image formats — WebP/AVIF
- Lazy loading
- CSS minification
- JavaScript minification
- Unused CSS/JS — detection
- Render-blocking resources
- Browser caching — Cache-Control, Expires
- Gzip/Brotli compression
- CDN usage
- Font loading strategy — font-display
- Third-party script impact
- DOM size
- Server response time
- HTTP/2 or HTTP/3
- Preconnect/prefetch hints
5. Security audit
Security protects both you and your visitors. We test headers, encryption and common vulnerabilities.
- HTTPS — valid SSL/TLS certificate
- Certificate expiration date
- TLS version — minimum 1.2
- HSTS header — Strict-Transport-Security
- Content-Security-Policy
- X-Content-Type-Options
- X-Frame-Options / frame-ancestors
- Referrer-Policy
- Permissions-Policy
- Cross-Origin headers — CORS, COEP, COOP
- Cookie security — Secure, HttpOnly, SameSite
- Mixed content warnings
- Open redirects
- Information leakage — server version, powered-by headers
- Directory listing
- Exposed config files — .env, credentials
- SQL injection — surface scanning
- XSS — reflection scanning
- CSRF token handling — on forms
- Subresource Integrity (SRI) — on CDN scripts
Want to know how your site performs?
We run all these tests and compile the results into a clear report with prioritized action items. Contact us for a free initial analysis.
