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HTML Checklist

Best Practices

  • Only one h1 on the page
  • Heading levels convey the content hierarchy (with no levels skipped)
  • Semantic HTML
  • No validation errors
  • Automated a11y tests pass
  • No hardcoded "en-US" in links to Mozilla sites
  • External links have rel="external noopener"
  • Destination does not 404

SEO

  • Is there an appropriate page title and description?
  • Page linked from subnav where applicable