Official statement
The 15 MB limit applies only to the initially retrieved HTML file, prior to the execution of JavaScript. Content generated by JavaScript through onload events or Ajax is not included in this initial limit.
21:23
Other statements from this video 17 ▾
- 1:35 How does Googlebot's 15 MB limit influence your SEO strategy?
- 2:01 Is it true that Googlebot only crawls the first 15 MB of HTML files?
- 3:03 How is the new video indexing report transforming your SEO strategy?
- 3:03 How can you leverage the new Video Indexing Report in Search Console?
- 5:47 Is it true that a noindex on an error page can lead to your URL being deindexed?
- 6:32 How does support for the M3U8/HLS format influence your video SEO?
- 6:52 Is it true that Google supports the M3U8/HLS format for videos?
- 8:55 Should you continue publishing even when facing canonicalization issues?
- 13:23 Why is a hierarchical URL structure a game-changer for SEO?
- 14:06 Why should you favor logical directories for your SEO URLs?
- 17:24 How can you ensure your site stays visible and doesn’t get excluded due to similarity?
- 17:44 How can you make your pages stand out to prevent Google from omitting them?
- 19:49 Why is the 15 MB limit on uncompressed files crucial for SEO?
- 19:49 How does Googlebot's 15 MB limit affect your SEO strategy?
- 21:23 Why is the 15 MB limit before JavaScript execution crucial for your SEO?
- 22:57 Why are Google search referrers still undifferentiated?
- 22:57 How do Google referrers really impact your SEO analysis?
Official statement from
(4 years ago)
⚠ A more recent statement exists on this topic
Did Google really hide a 15 MB indexing limit from everyone for 15 years?
View statement →
TL;DR
Google clarifies that the 15 MB limit only applies to the initial HTML file and not to content generated by JavaScript. This means that onload events or Ajax requests are not counted within this limit. SEO experts should focus on optimizing the initial HTML.
❓ Frequently Asked Questions
La limite de 15 MB inclut-elle le JavaScript ?
Non, elle ne concerne que le fichier HTML initial avant l'exécution de tout JavaScript.
Le chargement via Ajax est-il concerné ?
Non, le contenu chargé via Ajax après le chargement initial ne compte pas dans la limite de 15 MB.
Comment vérifier si mon site respecte cette limite ?
Utilisez des outils comme Lighthouse ou PageSpeed Insights pour analyser la taille de votre fichier HTML initial.
🎥 From the same video 17
Other SEO insights extracted from this same Google Search Central video · duration 27 min · published on 28/07/2022
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