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Link Building & Vertical SEO
Lesson 16 of 18 ยท Vertical SEO
FREE +45 XP
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Mobile-First Indexing

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Alex checks mobile
"Desktop version is perfect. Mobile โ€” broken menu, truncated content, 8px font. Since 2023 Google indexes only the mobile version. The site effectively doesn't exist in search."
๐Ÿ“Œ Mobile-First Indexing โ€” since 2023, Google uses only the mobile version of a site for indexing and ranking.

Mobile-First Requirements

  • All desktop content must exist on mobile
  • Meta tags (title, description) โ€” identical on desktop and mobile
  • Structured data โ€” must be present on both versions
  • Images must load on mobile
  • Core Web Vitals โ€” the mobile version is evaluated

Checking Mobile Compatibility

  • Google Mobile-Friendly Test โ€” quick URL check
  • GSC โ†’ Core Web Vitals โ€” page groups with issues
  • Chrome DevTools โ†’ devices โ†’ check real rendering
Responsive design > separate m.site.com

A separate mobile site means double the SEO work. One responsive site is the best solution.
๐ŸŽฏ Rule: if something is hidden on mobile via CSS display:none โ€” Google sees it but may weight it less.
๐ŸŽฎ Test yourself: what does Mobile-First Indexing mean?
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Lesson Task
Test your knowledge and earn +20 XP
โ† Video SEO & YouTube
Lesson 16 of 18
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