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Official statement

CDNs can sometimes exhibit unstable behavior when distributing CSS. If Google is unable to fetch the CSS, the styling may be incorrect, leading to mobile compatibility issues that Google may detect.
🎥 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. □ Why do links without HREF hinder Google's indexing?
  3. □ Does the no-index tag really prevent Google from crawling your pages?
  4. □ Why does Google index blocked pages by robots.txt?
  5. □ How does Google view window.history.pushState in terms of SEO?
  6. □ Is it true that the mobile validator isn't always reliable for your URLs?
  7. □ Does mobile compatibility really have a significant impact on your SEO?
  8. □ Is it true that JavaScript-loaded content remains invisible to Googlebot?
  9. □ Could HTML Buttons Be Undermining Your SEO Efforts?
  10. □ How can you ensure that every URL in your SPA is properly indexed by Google?
  11. □ How Does the Compatibility of the Beacon API with the WRS Influence Your SEO Tracking?
  12. □ How can you ensure that content beneath the viewport is acknowledged by Google?
  13. □ Are Google’s Testing Tools Truly Reliable for SEO?
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Official statement from (5 years ago)
TL;DR

CDNs can cause mobile display issues due to unstable CSS delivery. If Google can't fetch the CSS, the layout may become incorrect. Stay vigilant about mobile compatibility.

❓ Frequently Asked Questions

Un CDN peut-il vraiment affecter le SEO mobile ?
Oui, en cas d'instabilité du CDN, le rendu peut être compromis, impactant le classement mobile.
Comment Google détecte-t-il les problèmes de CSS ?
Google utilise ses robots d'indexation pour récupérer les fichiers CSS. Si ceux-ci sont inaccessibles, un problème est notifié.
Les CDN sont-ils les seuls responsables de tels problèmes ?
Non, d'autres facteurs comme des scripts mal optimisés peuvent aussi nuire à l'affichage mobile.
🏷 Related Topics
Domain Age & History Mobile SEO Pagination & Structure

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Other SEO insights extracted from this same Google Search Central video · published on 22/09/2021

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