What does Google say about SEO? /

Official statement

Google constantly balances between maintaining an up-to-date view of the web and not overwhelming sites with too many requests. The goal is to provide good value for the bandwidth consumed.
🎥 Source video

Extracted from a Google Search Central video

💬 EN 📅 21/12/2021 ✂ 12 statements
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Other statements from this video 11
  1. Does the robots.txt file really prevent the indexing of your pages?
  2. Is your SEO testing tool really considered a crawler by Google?
  3. Does Googlebot really follow links or does it work differently?
  4. Is it true that Google's open source robots.txt parser is really used in production?
  5. Why is Google dropping indexing directives in robots.txt?
  6. Does publishing a website legally mean you allow Google to crawl it?
  7. Can you index a page without crawling it?
  8. Is it true that Google rejects overly granular robots.txt directives?
  9. Is robots.txt really enough to control your site's crawl?
  10. Who really created Google's robots.txt parser?
  11. Is it true that Google completely refuses to modernize the robots.txt format?
📅
Official statement from (4 years ago)
TL;DR

Google automatically adjusts its crawl frequency to keep its index up to date without overloading your servers. The algorithm seeks the best balance between data freshness and bandwidth consumption. This automatic regulation directly impacts the speed of indexing your new pages.

What you need to understand

Why does Google intentionally limit its crawl speed? <\/h3>

Googlebot could technically crawl the entire web in a few hours if it wanted to. But that would crash the servers<\/strong> of millions of sites that lack the infrastructure of Amazon or Wikipedia.<\/p>

This self-limitation is not pure altruism — it's pragmatism. A site that collapses under the load of Googlebot becomes uncrawlable<\/strong>, and thus not indexable. Google loses out just as much as you do.<\/p>

How does Google determine the optimal crawl frequency for each site? <\/h3>

The algorithm observes two main parameters: server response speed<\/strong> and content update frequency<\/strong>. A site that responds quickly and publishes often naturally gets crawled more.<\/p>

Conversely, if your server struggles or repeatedly returns 5xx errors, Googlebot automatically slows down its pace. It's a system of continuous adaptation — not a fixed quota decided in advance.<\/p>

What does this "good value" Google talks about mean? <\/h3>

Google wants fresh and relevant content<\/strong> for each crawled query. If 80% of the pages visited haven't changed in 6 months, it's a waste of bandwidth on both sides.<\/p>

The engine optimizes to crawl mainly the areas that are actually moving. Hence the importance of properly signaling your updates through sitemaps with lastmod<\/strong> and appropriate HTTP headers.<\/p>

  • Google automatically adjusts its crawl frequency based on server capacity<\/li>
  • Response speed and update frequency are the main criteria<\/li>
  • The goal: maximize index freshness without saturating infrastructures<\/li>
  • A slow or unstable site automatically sees its crawl budget reduced<\/li><\/ul>

SEO Expert opinion

Is this statement consistent with real-world observations? <\/h3>

Overall yes — but with a significant nuance<\/strong>: Google doesn't say that all sites are treated equally. An authority site with millions of backlinks naturally gets a higher crawl budget, even with the same infrastructure.<\/p>

I've seen major media sites being crawled several times per hour, while average e-commerce sites waited 3-4 days for a product listing update. The "good value" is not the same everywhere. [To be verified]<\/strong>: Google has never published numerical data on this disparity.<\/p>

What nuances should be added to this balance logic? <\/h3>

Google talks about balance, but in practice, it sets the rules of the game<\/strong>. You have no direct control over your crawl budget — just indirect levers through technical optimization.<\/p>

And let's be honest: this limitation also benefits Google financially. Less crawling = less infrastructure to maintain. The ecological argument is appealing, but it also hides an economic reality.<\/p>

When does this automatic regulation pose a problem? <\/h3>

Typically on large e-commerce sites<\/strong> with tens of thousands of items changing prices daily. Even optimized, your server might respond in 200ms — if Google decides to crawl 2 pages/second instead of 20, you have an indexing problem.<\/p>

Another tricky case: sites that are migrating or undergoing massive redesigns. You want Google to quickly discover your new URLs, but the bot sometimes maintains its usual pace for weeks.<\/p>

Attention<\/strong>: An undersized server can create a vicious cycle — slowness → less crawl → delayed indexing → less traffic → less budget to improve the server.<\/div>

Practical impact and recommendations

What should you prioritize optimizing to maximize your crawl? <\/h3>

The server speed<\/strong> above all. A TTFB (Time To First Byte) below 200ms puts you in the right category. Beyond 600ms, you seriously handicap your crawl budget.<\/p>

Next: ruthlessly clean out unnecessary pages<\/strong>. Every URL crawled for no reason (empty pages, duplicates, unnecessary facets) eats up budget that should go to your strategic pages.<\/p>

How to prevent Googlebot from still overwhelming your server? <\/h3>

Correctly configure your robots.txt file<\/strong> with Crawl-delay if necessary — even if Google doesn't always officially respect it. Monitor your server logs for abnormal spikes.<\/p>

If you notice slowdowns correlated with Googlebot's visits, use the Search Console<\/strong> to report the issue and request a temporary adjustment. Yes, this exists — few know it.<\/p>

What mistakes should you absolutely avoid? <\/h3>

Never block Googlebot out of fear of server load. That's shooting yourself in the foot for your SEO. If your infrastructure can't handle a standard Google crawl, the problem is the infrastructure<\/strong>, not the bot.<\/p>

Also avoid gigantic, poorly structured sitemaps. A sitemap of 50,000 URLs without hierarchy or prioritization ensures that Google crawls anything anytime.<\/p>

  • Measure your current TTFB and aim for <200ms if possible<\/li>
  • Audit your server logs to identify URLs crawled unnecessarily<\/li>
  • Clean up the robots.txt and block sections with no SEO value<\/li>
  • Structure your sitemaps by content type and update frequency<\/li>
  • Monitor 5xx errors that signal Google to slow down crawling<\/li>
  • Use logs to spot crawl patterns and adjust your architecture<\/li><\/ul>
    Maximizing crawl budget optimization relies on two pillars: a fast and stable server<\/strong>, and a clean architecture without URL pollution<\/strong>. These technical optimizations often require specialized expertise in infrastructure and log analysis — if you experience recurring indexing problems despite quality content, working with a specialized SEO agency can save you months by accurately identifying your crawl bottlenecks.<\/div>

❓ Frequently Asked Questions

Peut-on augmenter manuellement son crawl budget dans la Search Console ?
Non, pas directement. Vous pouvez demander une réindexation d'URL spécifiques ou signaler un problème de surcharge serveur, mais Google ajuste le crawl budget automatiquement selon ses propres critères. La seule vraie influence vient de l'optimisation technique de votre site.
Un site lent est-il systématiquement moins crawlé qu'un site rapide ?
Oui, dans la grande majorité des cas. Un TTFB élevé et des temps de réponse lents déclenchent une régulation automatique du crawl. Google réduit la fréquence pour éviter de surcharger le serveur, ce qui retarde l'indexation des nouvelles pages.
Les erreurs serveur 5xx impactent-elles durablement le crawl budget ?
Oui. Des erreurs 5xx répétées signalent à Googlebot que le serveur est fragile. Le bot réduit alors sa fréquence de crawl pendant plusieurs jours voire semaines, même après résolution du problème. Il faut du temps pour reconstruire la confiance.
Faut-il bloquer certaines sections du site dans le robots.txt pour optimiser le crawl ?
Oui, absolument. Bloquez les URLs de filtres, de recherche interne, de session ou toute section générant des doublons. Chaque URL inutilement crawlée réduit le budget disponible pour vos pages stratégiques.
Le crawl budget est-il le même pour tous les types de sites ?
Non. Google alloue plus de crawl budget aux sites d'autorité, aux médias fréquemment mis à jour et aux sites avec une forte popularité externe. Deux sites identiques techniquement peuvent avoir des crawl budgets très différents selon leur profil de liens.

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