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Official statement

Google automatically adapts the crawling of pages according to their importance and update frequency. Main pages like the homepage and category pages are often crawled more frequently because they are regularly updated and contain links to other pages.
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Extracted from a Google Search Central video

⏱ 54:45 💬 EN 📅 24/08/2017 ✂ 33 statements
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Other statements from this video 32
  1. 1:07 Comment Google décide-t-il vraiment quelles pages crawler en priorité sur votre site ?
  2. 5:21 Faut-il vraiment optimiser les titres de pages produits pour Google ou pour les utilisateurs ?
  3. 5:22 Plusieurs pages peuvent-elles avoir le même H1 sans risque SEO ?
  4. 6:54 Les liens en mouseover sont-ils vraiment crawlables par Google ?
  5. 9:54 Googlebot suit-il vraiment les liens internes masqués au survol ?
  6. 10:53 Faut-il bloquer les scripts JavaScript dans le robots.txt ?
  7. 13:07 Comment exploiter Search Console pour piloter son SEO mobile de façon optimale ?
  8. 16:01 Faut-il vraiment rendre vos fichiers JavaScript accessibles à Googlebot ?
  9. 18:06 Faut-il vraiment garder son fichier Disavow même avec des domaines morts ?
  10. 21:00 JavaScript et indexation Google : jusqu'où peut-on vraiment pousser le curseur côté client ?
  11. 21:45 Comment isoler le trafic SEO d'un sous-domaine ou d'une version mobile dans Search Console ?
  12. 23:24 Combien d'articles faut-il afficher par page de catégorie pour optimiser le SEO ?
  13. 23:32 La balise canonical transfère-t-elle vraiment autant de signal qu'une redirection 301 ?
  14. 29:00 Le contenu dupliqué est-il vraiment un problème SEO à traiter en priorité ?
  15. 29:12 Le fichier Disavow neutralise-t-il vraiment tous les backlinks désavoués ?
  16. 29:32 Les balises canonical transmettent-elles réellement les signaux SEO comme une redirection 301 ?
  17. 30:26 Faut-il vraiment nettoyer son fichier Disavow des URLs mortes et redirigées ?
  18. 33:21 Le JavaScript est-il vraiment un problème pour le crawl de Google ?
  19. 36:20 Faut-il vraiment mettre en noindex les pages de catégorie peu peuplées ?
  20. 40:50 Faut-il vraiment passer son site en HTTPS pour le SEO ?
  21. 41:30 HTTPS booste-t-il vraiment votre SEO ou est-ce un mythe Google ?
  22. 45:25 Google retire-t-il vraiment les pages trompeuses ou se contente-t-il de les déclasser ?
  23. 46:12 Faut-il vraiment éviter les balises canonical sur les pages paginées ?
  24. 47:32 Comment accélérer la désindexation des pages orphelines qui plombent votre index Google ?
  25. 48:06 Le contenu dupliqué impacte-t-il vraiment le crawl budget de votre site ?
  26. 53:30 Les signalements de spam Google garantissent-ils vraiment une action ?
  27. 57:26 Le contenu descriptif sur les pages catégorie règle-t-il vraiment le problème d'indexation ?
  28. 59:12 Les pages de catégorie vides nuisent-elles vraiment à l'indexation ?
  29. 63:20 Faut-il vraiment réécrire toutes les descriptions produit pour ranker en e-commerce ?
  30. 70:51 Google peut-il fusionner vos sites internationaux si le contenu est trop similaire ?
  31. 77:06 Faut-il vraiment éviter les canonicals vers la page 1 sur les séries paginées ?
  32. 80:32 Faut-il vraiment compter sur le 404 pour nettoyer l'index Google des URLs orphelines ?
📅
Official statement from (8 years ago)
TL;DR

Google automatically adjusts its crawling frequency based on the perceived importance of pages and their update frequency. The homepage and category pages receive more intensive crawling because they centralize links and often change. Understanding this hierarchy allows for optimizing internal linking and maximizing the available crawl budget.

What you need to understand

Why does Google crawl some pages more than others?

Google does not have infinite resources to explore the web. Each site has an implicit crawl budget, determined by the site's popularity, its technical health, and the frequency of content updates.

The engine prioritizes pages that change frequently and those that act as hubs, meaning they distribute PageRank to other URLs. The homepage and category pages fit this profile perfectly: they aggregate links to dozens or even hundreds of product or article pages, and their content evolves as new items are published.

What qualifies as an 'important' page according to Google?

The importance of a page is not measured by its commercial value to you, but by its role in the site's architecture. A page is considered important if it receives many internal links, is a few clicks away from the root, and itself distributes many links.

Category pages tick all these boxes. They are typically accessible from the main menu, receive links from the homepage, and point to dozens of product sheets or articles. Google regards them as strategic nodes that need close monitoring for updates.

How does update frequency influence crawling?

Google adjusts its behavior based on observed history. If a page changes every day, the crawler will return more often to capture the changes. Conversely, if a page remains static for months, Google will space out its visits.

This is exactly what happens with categories: every time a product is added, removed, or an article is published, the page evolves. Google records this pattern and adjusts its crawling schedule. An isolated product sheet may remain unchanged for weeks, causing Google to visit it less frequently.

  • Hub pages (homepage, categories): automatic frequent crawl
  • Freshness: regular updates trigger recurring visits
  • Architecture: closeness to the root and the volume of internal links matter
  • Limited budget: Google cannot crawl everything, it prioritizes based on these signals
  • Dynamic adaptation: the crawling rate evolves based on observed history

SEO Expert opinion

Is this statement consistent with real-world observations?

Yes, it aligns precisely with what we observe in server logs. Category pages and the homepage often account for 60 to 80% of the crawl on e-commerce and media sites, even though they comprise only a tiny fraction of the total number of pages.

What we also observe is that Google first crawls the URLs discovered via these strategic pages. If a product sheet is only accessible after 5 clicks, it will be visited less frequently, even if it is technically indexable. Therefore, internal linking becomes a direct lever on crawling frequency.

What nuances should we consider?

Mueller's statement remains generic. It does not specify how Google measures importance exactly, nor the relative weight of internal PageRank, crawl depth, or update frequency. [To be verified]: there is no official ratio to quantify precisely the impact of each factor.

Another point: not all sites are equal. A site with a low overall crawl budget will see its categories crawled, certainly, but not necessarily every week. External popularity (backlinks) plays a major role in the total volume of crawl allocated. A niche site with few incoming links will have a limited budget, even if its architecture is impeccable.

In what cases does this logic not apply?

Static or institutional content sites do not benefit from the same effect. If your category pages never change, Google will eventually space out its visits. This is typically the case with fixed catalogs, showcase sites without updates, or archived document repositories.

Another exception: orphaned or poorly linked pages. Even if a category page technically exists, if it is not linked from the homepage or menu, Google will consider it unimportant and will crawl it rarely. Architecture takes precedence over intent.

Warning: artificially increasing the modification frequency (timestamps, dynamic widgets) without real editorial change may dilute the signal and penalize the perceived quality of the content.

Practical impact and recommendations

What concrete actions should be taken to maximize the crawl of strategic pages?

Optimize your internal linking so that category pages and the homepage receive maximum links from other sections of the site. Use breadcrumbs, contextual menus, and sidebar navigation blocks. Each additional internal link strengthens the signal of importance.

Regularly update your categories. Add new products, change sorting order, integrate editorial banners. Google detects these changes and adjusts its visiting rhythm. An RSS feed or XML sitemap with accurate lastmod also helps.

What mistakes should be avoided?

Do not create ghost categories: empty pages or those with 2-3 products that never move. Google will visit them once, note the emptiness, and will not return. It is better to merge weak categories than to scatter the crawl budget.

Avoid infinite chaining via pagination or filters: Google can get lost in thousands of facet URLs. Use rel="prev/next", canonical tags, or block certain combinations in robots.txt to focus the crawl on priority URLs.

How can you verify that your site is compliant?

Analyze your server logs over 30 days. Identify the most crawled pages: these are the ones that Google considers important. If strategic categories do not appear in the top 20, it is a warning sign.

Use Google Search Console to check the indexing frequency of categories. If key pages are only crawled once a month while they change every week, there is a detection or budget issue.

  • Audit the internal linking to strengthen strategic categories
  • Regularly update the content of hub pages
  • Avoid diluting the crawl budget with unnecessary URLs (facets, filters)
  • Analyze server logs to identify crawl patterns
  • Check the indexing frequency in Search Console
  • Use XML sitemaps with lastmod to signal changes
These technical optimizations require a detailed analysis of architecture, logs, and Googlebot behavior. For medium and large sites, orchestrating these adjustments can be complex: auditing thousands of pages, prioritizing projects, and measuring real impact requires sophisticated expertise. If your team lacks internal resources, working with an SEO agency specialized in crawl optimization can significantly accelerate results and avoid costly mistakes.

❓ Frequently Asked Questions

Google crawle-t-il vraiment plus souvent les pages de catégories que les fiches produits ?
Oui, en général. Les catégories changent plus souvent (ajout/retrait de produits) et centralisent les liens internes, donc Google leur alloue un budget de crawl plus élevé. Les fiches produit stables sont visitées moins fréquemment.
Comment savoir si mes catégories sont suffisamment crawlées ?
Analyse tes logs serveur sur 30 jours et compare la fréquence de crawl des catégories avec celle des pages feuilles. Si une catégorie stratégique est visitée moins d'une fois par semaine alors qu'elle change quotidiennement, c'est un signal d'alerte.
Faut-il modifier artificiellement les catégories pour augmenter le crawl ?
Non. Google détecte les changements superficiels (timestamps, widgets dynamiques sans valeur). Seules les modifications éditoriales réelles (nouveaux produits, contenus enrichis) améliorent durablement le crawl.
Le nombre de liens internes vers une catégorie influence-t-il le crawl ?
Oui, fortement. Plus une page reçoit de liens internes, plus Google la considère comme importante et la visite régulièrement. Le maillage interne est un levier direct sur la fréquence de crawl.
Les petites boutiques en ligne bénéficient-elles du même effet ?
Oui, mais avec un budget de crawl global plus limité. La logique de priorisation reste valable, mais Google alloue moins de ressources totales aux sites avec peu de backlinks et peu de pages. L'optimisation du maillage reste essentielle.
🏷 Related Topics
Domain Age & History Crawl & Indexing Links & Backlinks

🎥 From the same video 32

Other SEO insights extracted from this same Google Search Central video · duration 54 min · published on 24/08/2017

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