Official statement
JavaScript generally has no impact on crawlability. The blocking of the main thread by JavaScript is a loading performance issue, not a crawling issue. Crawling and rendering are two distinct steps.
Other statements from this video 13 ▾
- □ Is hidden content truly visible to Google?
- □ Do Google’s third-party tools really impact your SEO?
- □ Why Have #! Fragments Become a No-Go for SEO?
- □ Why does Google render after crawling?
- □ How Are JavaScript Resource Requests Impacting Your Crawl Budget?
- □ Does blocking the main thread really impact SEO?
- □ Could JavaScript harm your SEO the way Flash did?
- □ Is it possible to avoid cloaking with localized user experiences?
- □ Could using URL fragments for JavaScript modals actually boost your SEO?
- □ Why should you steer clear of inline JavaScript for large SEO scripts?
- □ Is it true that the canonical tag is often overlooked by Google?
- □ Does AMP really affect your website's SEO?
- □ Why is page speed essential for SEO rankings?
Official statement from
(5 years ago)
⚠ A more recent statement exists on this topic
Can Invalid Schema.org Markup Penalize Your Organic Rankings?
View statement →
TL;DR
JavaScript does not block crawlability according to Google. The real issue lies in loading performance. Make sure to differentiate between crawling and rendering in your strategies.
❓ Frequently Asked Questions
JavaScript peut-il toujours influencer le SEO ?
Oui, bien que JavaScript ne bloque pas le crawl, il peut affecter le rendu et donc l'évaluation des pages.
Quel est le vrai problème avec JavaScript d'après Google ?
Le problème réside dans les performances de chargement, pas dans le processus de crawl.
Google traite-t-il crawl et rendu de manière séparée ?
Oui, Google considère le crawl comme distinct du rendu, chacun ayant des implications spécifiques.
🎥 From the same video 13
Other SEO insights extracted from this same Google Search Central video · published on 26/05/2021
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