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Official statement

Using noindex on certain pages may reduce their crawl frequency. Decide whether you want to keep a page always indexed, or use noindex if you are certain it won't add value for a long time.
29:50
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Extracted from a Google Search Central video

⏱ 1h03 💬 EN 📅 31/10/2019 ✂ 11 statements
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Official statement from (6 years ago)
TL;DR

Google claims that using noindex on certain pages can reduce their crawl frequency. This statement raises a strategic question: should you index a page even if it doesn't provide immediate value, or apply noindex at the risk of it being visited less often by bots? The choice depends on your long-term vision and your management of crawl budget.

What you need to understand

How does noindex affect crawl frequency?

When you tag a page with the noindex tag, you tell Google that it shouldn't appear in search results. But this signal goes beyond just indexing.

Google continuously adjusts the crawl frequency based on the perceived "value" of a page. A noindexed page is viewed as less of a priority: if it can't generate organic traffic, why dedicate crawl budget to it? The bot therefore visits it less often, or may significantly space out its visits over time.

What’s the difference between noindex and complete deindexing?

The noindex tag removes the page from the index, but Google continues to discover and crawl it — at least initially. Over time, if the tag remains in place, the frequency drastically decreases.

A noindexed page remains technically accessible to the bot, unlike a page blocked by robots.txt (which completely prevents crawling). This nuance is crucial: blocking with robots.txt = zero crawl. Noindex = gradually reduced crawl.

When should you really use noindex?

Mueller raises the strategic question: are you sure this page will provide no added value for a long time? If yes, then use noindex. Otherwise, keep it indexed.

Typically, pages with low SEO value are noindexed: facet filters, thank-you pages, temporary or duplicated content. But if a page has future potential — even a slight chance — or serves as internal linking, think twice.

  • Noindex reduces crawl in the long term, not instantly
  • A noindexed page remains technically crawlable, unlike a page blocked by robots.txt
  • Google adjusts the crawl frequency based on the perceived value of a URL
  • Noindex is relevant for content with no medium/long-term SEO potential
  • An indexed page retains its crawl budget even if it generates little traffic

SEO Expert opinion

Is this statement consistent with field observations?

Yes, absolutely. We regularly observe in logs that noindex pages see their crawl frequency drop after a few weeks. Google optimizes its budget: why crawl a page that does not serve the index?

However, Mueller remains purposely vague about the timeline. How long before crawl frequency decreases significantly? It depends on the site's authority, the page's depth, and its history. [To be verified] on a case-by-case basis via your own logs.

What nuances should be added to this advice?

The problem is that many SEOs reflexively use noindex on pages that could be useful. A poorly visited filter page today may become relevant tomorrow if you adjust the content or linking.

And this is where the issue arises: once crawl is reduced, it is difficult to quickly reinstate it. If you remove the noindex tag, Google will not instantly return to crawl the page thoroughly. Sometimes, you need to force it through Search Console or wait several weeks. In other words, noindex is a long-term choice, not a switch that you can turn on/off without consequences.

When does this rule not apply?

On high authority sites, crawl budget is rarely a concern. Google regularly crawls even noindexed pages. But for 95% of sites, every URL counts.

Another case: pages that aid in internal linking without needing indexing (such as navigation hubs). Here, noindex is legitimate, but it must be balanced with a strong internal linking structure from indexed pages to maintain a minimum of crawl.

Note: Do not confuse noindex with robots.txt. Blocking with robots.txt prevents both crawling AND indexing — but if backlinks point to the page, Google can still index it without having crawled it. Noindex, on the other hand, requires a crawl to be detected.

Practical impact and recommendations

What concrete actions should you take to optimize the use of noindex?

Start with a comprehensive audit of your noindexed pages. List them all, analyze their actual role: do they generate internal traffic? Do they serve as linking? Do they have future potential?

Next, segment: pages for permanent noindex (thank you, terms of service, errors...) versus pages to reindex if they have SEO utility. For the latter, remove the noindex tag, optimize the content, strengthen internal linking, and then force the crawl via Search Console.

What mistakes should you absolutely avoid?

Do not noindex a page just because it generates little traffic today. SEO is a game of patience. A well-linked page can gain traction over months.

Another pitfall: noindexing category pages or important hubs out of fear of duplicate content. Bad idea. Instead, use canonicalization or enhance the content. Noindex severally limits potential SEO.

How can you verify that your noindex strategy is coherent?

Analyze your server logs. Compare the crawl frequency of noindexed pages versus indexed ones. If you see a huge delta, that's normal. But if important pages are mistakenly noindexed and crawled little, correct it immediately.

Also, use the Search Console: Coverage section > Excluded. Check that the noindexed pages are indeed the ones you intended. An accidental noindex on a strategic page happens more often than you think.

  • Audit all noindexed pages and validate their relevance
  • Never noindex a category page or internal linking hub without a solid reason
  • Analyze logs to assess the real impact of noindex on crawl frequency
  • Force crawl via Search Console after removing a noindex from a strategic page
  • Use canonicalization instead of noindex to manage duplicate content
  • Avoid noindexing by reflex: every indexed URL is a potential entry point
Noindex is a powerful tool, but a double-edged sword. It reduces crawl, so it should only be used on pages with no medium/long-term SEO potential. For complex sites with thousands of URLs, a poorly calibrated noindex strategy can waste crawl budget or conversely hinder visibility. If you are uncertain about how to proceed or if your architecture is complex, the support of a specialized SEO agency can help you avoid costly mistakes and finely optimize your indexing.

❓ Frequently Asked Questions

Le noindex empêche-t-il complètement le crawl d'une page ?
Non. Le noindex retire la page de l'index, mais Google continue de la crawler — au moins initialement. Avec le temps, la fréquence de crawl diminue car Google considère la page comme moins prioritaire.
Quelle est la différence entre noindex et robots.txt ?
Le robots.txt bloque totalement le crawl : Google ne visite pas la page. Le noindex nécessite un crawl pour être détecté, puis retire la page de l'index. Une page bloquée par robots.txt peut quand même être indexée si elle reçoit des backlinks.
Combien de temps faut-il pour que le crawl d'une page noindexée diminue ?
Google ne donne pas de délai précis. En général, on observe une baisse après quelques semaines à quelques mois, selon l'autorité du site et la profondeur de la page. Analysez vos logs pour mesurer l'impact réel.
Peut-on réindexer facilement une page après avoir retiré le noindex ?
Oui, mais pas instantanément. Il faut que Google recrawle la page et constate l'absence de noindex. Vous pouvez forcer le crawl via la Search Console, mais le retour à une fréquence normale peut prendre du temps.
Le noindex impacte-t-il le PageRank interne transmis par les liens ?
Oui, potentiellement. Si une page noindexée reçoit des liens internes, elle ne transmet pas de PageRank vers les pages qu'elle lie (ou très peu). Mieux vaut éviter de noindexer des hubs de maillage importants.
🏷 Related Topics
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