The 32 technical SEO checks

Inspect page metadata, indexing declarations, headings, images and JSON-LD in public HTML. Each audit shows measured evidence and practical next steps. These checks do not render JavaScript, measure Core Web Vitals or determine search rankings.

Technical SEO

HTTP status, HTTPS, robots, sitemaps and indexability.

Checks 9–14 of 32

  • 09HTTPS & SSL Security
  • 10Robots.txt File Presence
  • 11XML Sitemap Availability
  • 12Page Indexability Directives
  • 13HTTP Response Status Code
  • 14Open Graph Social Metadata

The complete HTML audit checklist

Page analysis

Titles, descriptions, canonical URLs and page directives.

  1. 1. Title Tag Presence
  2. 2. Title Character Length
  3. 3. Meta Description Presence
  4. 4. Meta Description Length
  5. 5. Canonical URL Tag
  6. 6. Robots Meta Directive
  7. 7. HTTPS Protocol Usage
  8. 8. URL Structure & Slug Cleanliness

Technical SEO

HTTP status, HTTPS, robots, sitemaps and indexability.

  1. 9. HTTPS & SSL Security
  2. 10. Robots.txt File Presence
  3. 11. XML Sitemap Availability
  4. 12. Page Indexability Directives
  5. 13. HTTP Response Status Code
  6. 14. Open Graph Social Metadata

Mobile SEO

Viewport declarations and mobile icon metadata.

  1. 15. Viewport Meta Tag Presence
  2. 16. Responsive Viewport Configuration
  3. 17. Mobile Icon Declarations

Heading structure

Heading existence, order and quality.

  1. 18. H1 Tag Existence
  2. 19. Single H1 Convention
  3. 20. H2 Subheading Structure
  4. 21. Heading Hierarchy Order
  5. 22. Heading Content Quality

Images

Image inventory, alt text, dimensions and declared formats.

  1. 23. Image Count & Asset Inventory
  2. 24. Image Alt Attribute Coverage
  3. 25. Alt Text Heuristics
  4. 26. HTML Image Dimensions
  5. 27. Modern Image URL Formats

Schema markup

JSON-LD syntax and declared entities and contexts.

  1. 28. JSON-LD Structured Data Presence
  2. 29. Declared JSON-LD Entity Types
  3. 30. JSON-LD JSON Syntax
  4. 31. JSON-LD Entity Declarations
  5. 32. JSON-LD Context Declarations