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Official statement

To test if content loaded via Intersection Observer further down the page will be visible to Google, use the Rich Results Test with the desktop crawler, as it allows viewport expansion unlike mobile tools that have a configuration bug.
🎥 Source video

Extracted from a Google Search Central video

💬 EN 📅 22/09/2021 ✂ 14 statements
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Other statements from this video 13
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  2. Pourquoi les liens sans HREF limitent-ils l'indexation par Google ?
  3. Pourquoi le no-index n'arrête-t-il pas le crawl de Google ?
  4. Pourquoi Google indexe-t-il des pages bloquées par robots.txt ?
  5. Comment Google traite-t-il window.history.pushState en SEO ?
  6. Pourquoi le validateur mobile n'est-il pas toujours fiable pour vos URLs?
  7. La compatibilité mobile a-t-elle vraiment un impact significatif sur votre SEO ?
  8. Pourquoi les CDN peuvent-ils perturber l'affichage mobile de votre site ?
  9. Comment le contenu chargé en JavaScript reste-t-il invisible pour Googlebot?
  10. Pourquoi les boutons HTML peuvent-ils saboter votre SEO ?
  11. Comment optimiser les SPA pour s'assurer que chaque URL soit correctement indexée ?
  12. Comment la compatibilité de l'API Beacon avec le WRS impacte-t-elle votre suivi SEO ?
  13. Les outils de test de Google sont-ils vraiment fiables pour la SEO ?
📅
Official statement from (4 years ago)
TL;DR

Google recommends using the Rich Results Test in desktop mode to check the indexing of content dynamically loaded beneath the viewport. The mobile tool has a bug and does not expand the viewport correctly.

What you need to understand

What is viewport expansion?<\/h3>

Viewport expansion is a feature that allows checking if content initially not visible becomes accessible as a user scrolls. Google uses this to ensure it can index dynamically generated content, such as that loaded by an Intersection Observer.<\/p>

  • Important for content loaded via JS.<\/li>
  • Ensures full indexing by Google.<\/li><\/ul>

    Why does Google recommend desktop mode?<\/h3>

    The issue with mobile mode is that it does not properly handle viewport expansion due to a configuration bug. Using desktop mode circumvents this issue and ensures that the content will be visible to Google.<\/p>

    • Reliable desktop mode for expansion.<\/li>
    • Avoid mobile mode for now.<\/li><\/ul>

SEO Expert opinion

Is this statement consistent with observed practices?<\/h3>

Overall, yes. Observing dynamically generated content is a reality for many sites. However, experience shows that Google often adjusts its tools, and this mobile bug may be resolved in the future. [To be verified]<\/strong> if updates occur.<\/p>

What points deserve our attention?<\/h3>

The advice to use the Rich Results Test in desktop mode is crucial for indexing dynamic content. Stay alert for future updates to the mobile tool. When in doubt, prioritize desktop mode.<\/p>

Do not use mobile mode for critical indexing tests.<\/div>

Practical impact and recommendations

What practical steps should you take?<\/h3>

Use the Rich Results Test in desktop mode to verify that your content beneath the viewport is correctly acknowledged by Google. This ensures the indexing of critical sections loaded dynamically.<\/p>

  • Consistently test your critical pages in desktop mode.<\/li>
  • Keep an eye on updates from Google tools.<\/li><\/ul>

    What mistakes should you avoid?<\/h3>

    Do not use the mobile tool for this type of testing. It is essential to understand that your content's indexing could be suboptimal if you do not follow this recommendation.<\/p>

    • Don't rely on the mobile tool for now.<\/li>
    • Avoid ignoring dynamically loaded content.<\/li><\/ul>
      Technical optimization for SEO requires precision and rigorous methodology. If in doubt or results are unsatisfactory, consulting a specialized SEO agency may be a wise option.<\/div>

❓ Frequently Asked Questions

Le Rich Results Test mobile n'est-il pas fiable ?
Non, il présente un bug de configuration en matière d'expansion du viewport.
Pourquoi privilégier le desktop pour ces tests ?
Car le desktop assure l'indexation correcte du contenu chargé sous le viewport.
Les contenus dynamiques sont-ils bien indexés ?
Avec le bon outil et les bonnes pratiques, oui.

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