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Official statement

If Search Console indicates that certain JavaScript, CSS, or image resources are not loading during the crawl, this is generally not an issue. Google caches these resources and may skip downloading them if they are already in cache.
🎥 Source video

Extracted from a Google Search Central video

💬 EN 📅 29/09/2021 ✂ 15 statements
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✂ Other statements from this video 14 ▾
  1. □ What should you do if mass scraping is hurting your website?
  2. □ Is it necessary to have an identical design for dynamic rendering to please Googlebot?
  3. □ Are Invisible Noindex Tags Affecting Your A/B Testing Results?
  4. □ Are 404 Pages Really No Concern for SEO?
  5. □ How can you streamline third-party scripts for better SEO performance?
  6. □ Why is targeting a TTFB under one second critical for SEO?
  7. □ Is it true that not all your pages are indexed by Google?
  8. □ Is A/B testing really safe from cloaking as long as the topic stays consistent?
  9. □ How does Google handle dynamic content associated with hash URLs for indexing?
  10. □ Does a layout error during prerendering really affect your site's SEO indexing?
  11. □ How do blocked API requests impact your SEO?
  12. □ How can you effectively diagnose JavaScript rendering issues in SEO?
  13. □ Why is First Input Delay so challenging to measure in a lab setting?
  14. □ How can you improve FID by analyzing the main thread?
📅
Official statement from (5 years ago)
TL;DR

Google does not download certain resources like JavaScript or CSS if they are already cached. Don't panic if Search Console marks them as missing. This does not impact indexing.

❓ Frequently Asked Questions

Si une ressource n'est pas chargée lors du crawl, dois-je m'en inquiéter ?
Non, Google indique que ces ressources peuvent être en cache et donc non téléchargées à nouveau.
Le classement SEO sera-t-il affecté par ces ressources non chargées ?
Non, cela n'a pas d'impact direct sur l'indexation ou le classement.
Comment vérifier si des ressources manquent réellement pour Googlebot ?
Utilisez des outils de simulation de Googlebot pour tester le rendu de votre page.
Dois-je optimiser mon fichier robots.txt suite à cette déclaration ?
Vérifiez qu'il ne bloque pas les ressources critiques nécessaires au rendu de vos pages.
Des ressources manquantes peuvent-elles causer des problèmes d'expérience utilisateur ?
Potentiellement, si elles sont essentielles au rendu côté client, d'où l'importance de bien configurer le cache.
🏷 Related Topics
Domain Age & History Crawl & Indexing AI & SEO Images & Videos JavaScript & Technical SEO Web Performance Search Console

🎥 From the same video 14

Other SEO insights extracted from this same Google Search Central video · published on 29/09/2021

🎥 Watch the full video on YouTube →

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