What does Google say about SEO? /

Official statement

When rich snippets suddenly disappear without any changes to Google's technical requirements, it is generally due to an algorithmic reevaluation of the overall quality of the site. If the markup is technically correct and validated, the issue stems from the perceived quality of the site. To diagnose, performing a site search can reveal whether the rich snippets are displaying (indicating a quality issue) or not (technical issue). Specific policies related to the type of rich result should also be checked.
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Extracted from a Google Search Central video

⏱ 59:11 💬 EN 📅 11/08/2020 ✂ 42 statements
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Other statements from this video 41
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  3. 4:34 Does Google really ignore non-essential URL parameters on your site?
  4. 8:48 Are errors 405 and soft 404 truly handled the same way by Google?
  5. 8:48 Do soft 404s really trigger deindexing without a penalty?
  6. 10:08 Should you really prefer a soft 404 over a 405 error for removed Flash content?
  7. 17:06 Does submitting multiple Google reconsideration requests really speed up the review of your site?
  8. 18:07 Do manual actions for unnatural outbound links really affect a site's ranking?
  9. 18:08 Do penalties on outbound links really impact your site's ranking?
  10. 18:08 Should you really set all your outbound links to nofollow to protect your SEO?
  11. 19:42 Should you really set all your outbound links to nofollow to protect your PageRank?
  12. 22:23 Does Google always show your images in search results?
  13. 22:23 How does Google decide which images to display in search results?
  14. 23:58 How long does it take to recover traffic after a 301 redirect bug?
  15. 23:58 Can temporary technical bugs really sink your Google ranking for good?
  16. 24:04 Can a bug restoring your old URLs kill your SEO?
  17. 24:08 Why does Google aggressively recrawl your site after a migration?
  18. 27:47 Should you index a new URL before redirecting an old one in a 301?
  19. 28:18 Is it really necessary to wait for indexing before redirecting a URL in 301?
  20. 34:02 Why does the mobile-friendly test produce conflicting results on the same page?
  21. 37:14 Why should WebPageTest be your go-to tool for web performance diagnostics?
  22. 37:54 Are H1 titles really essential for ranking your pages?
  23. 38:06 Are H1 and H2 tags really important for Google ranking?
  24. 39:58 Is it true that structured data makes a difference based on whether it's implemented with a plugin or manually?
  25. 39:58 Should you manually code your structured data or opt for a WordPress plugin?
  26. 41:04 Should you really be worried about a 503 error on your site for a few hours?
  27. 41:04 Can a 503 error truly harm your site's SEO?
  28. 43:15 Why are your FAQ rich snippets disappearing despite technically valid markup?
  29. 43:15 Why are your rich results disappearing from regular SERPs while they technically work?
  30. 47:02 Why does Search Console show indexed URLs that are missing from the sitemap?
  31. 48:04 Should you really modify the lastmod of the sitemap to speed up recrawling after fixing missing tags?
  32. 48:04 Should you modify the lastmod date in the sitemap after simply correcting a meta title or description?
  33. 50:43 Is it normal for the Rich Results report in Search Console to remain empty despite valid markup?
  34. 50:43 Why is Google showing fewer of your FAQs as rich results?
  35. 50:43 Is it true that your validated FAQ markup might be invisible in Search Console?
  36. 51:17 Why is Google showing fewer FAQs in rich results now?
  37. 54:21 Why does Google choose a canonical URL in the wrong language for your multilingual content?
  38. 54:21 Does Googlebot really ignore your multilingual site's accept-language header?
  39. 54:21 Can Google really tell the difference between your multilingual pages, or is it at risk of mistakenly canonicalizing them?
  40. 57:01 Is Google really tolerant of hreflang errors that mismatch language and content?
  41. 57:14 Does Googlebot really send an accept-language header during crawling?
📅
Official statement from (5 years ago)
TL;DR

When rich snippets disappear without Google changing its technical requirements, the issue lies with the overall quality of the site, not the code. Technical validation is merely a prerequisite—it doesn't guarantee the display of rich snippets. A site search can help differentiate a quality issue (snippets visible) from a technical issue (snippets missing), but this method is still imperfect for a reliable diagnosis.

What you need to understand

How does Google decide to display or remove rich snippets?

Google conducts continuous algorithmic reevaluations of site quality. These assessments are based not solely on compliance with schema.org markup, but also integrate all quality signals from the domain.

A site can have technically perfect markup— validated by the Rich Results Test and without errors in Search Console—yet lose its rich snippets overnight. This signals that the algorithm has negatively reevaluated the trust placed in the site, regardless of the validity of the code.

What does a site search really reveal about the presence of rich snippets?

Mueller suggests a simple diagnostic method: perform a site:yourdomain.com search and observe if the rich snippets appear in that view. If snippets show up in site: mode but not in a normal search, the problem is likely related to the perceived quality of the site, not the code.

Conversely, if snippets don’t appear in the site search at all, it’s a technical issue: incorrect markup, manual penalties, or violations of policies specific to the type of rich result. This distinction theoretically helps identify the nature of the problem, but real-world outcomes are often less clear-cut.

What quality factors truly influence this decision?

Google never precisely details what triggers a negative reevaluation. We talk about global quality signals—user experience, domain authority, engagement, editorial consistency—but their weighting remains opaque.

The specific policies for each type of rich result (reviews, recipes, FAQs, events) also impose additional qualitative constraints. A site may comply with technical markup while violating these policies if the content is deemed misleading, spammy, or of low added value.

  • Technical validation is a necessary but not sufficient condition for the display of rich snippets.
  • Algorithmic reevaluation occurs continuously and can remove rich snippets without modifications to official technical requirements.
  • The site: method helps distinguish technical issues from quality problems but remains an imperfect indicator in practice.
  • Specific policies for each type of rich result add qualitative criteria beyond the code.

SEO Expert opinion

Is this diagnostic method really reliable in practice?

Using a site: search as a diagnostic tool has real limitations. Across thousands of audited sites, we often observe glaring inconsistencies: snippets absent in site: searches suddenly reappearing in normal searches a few days later, or vice versa.

Google's cache and propagation delays between data centers make this method unreliable for immediate diagnostics. Worse yet, some types of rich results (like FAQs) display behaviors that vary depending on the query context, regardless of the site:. [To be verified]: the relevance of this method for all types of snippets remains questionable.

Is the “overall quality of the site” a deliberately vague concept?

Citing the overall quality of the site is convenient for Google, but it’s also a complete black box for practitioners. No public metric allows for an objective measurement of this algorithmically perceived quality.

We see sites with excellent traditional signals—strong backlinks, high traffic, long visit duration—losing their snippets for unexplained reasons. Conversely, average sites may retain them. This suggests that algorithmic reevaluation incorporates criteria specific to the sector or type of content, which remains fully opaque. Let’s be honest: this lack of transparency makes any definitive diagnosis impossible.

When does this rule not apply at all?

Some removals of rich snippets have absolutely nothing to do with site quality. Google's policy changes regarding certain types of rich results (like the massive restriction of FAQ snippets in 2023-2024) have led to the disappearance of rich results on millions of compliant pages.

Likewise, temporary indexing bugs or crawling issues (exhausted budget, poorly managed redirects, misconfigured canonicals) can cause disappearances that are not algorithmic. Generally attributing snippet loss to site quality is thus a common diagnostic error.

Note: Do not confuse correlation with causation. A drop in snippets may coincide with an algorithmic update without being a direct consequence. Always cross-reference multiple data sources before concluding a quality issue.

Practical impact and recommendations

What should you check first when rich snippets disappear?

Start by eliminating obvious technical causes. Run Google’s Rich Results Test on the affected pages, check the “Enhancements” report in Search Console, and review server logs for potential crawling or JSON-LD markup access issues.

Next, perform the famous site: search—but don’t stop there. Also test with a precise brand query and a generic informational query. If snippets appear in some contexts and not others, the issue is likely linked to algorithmic relevance, not site quality.

How to diagnose a real “perceived quality” issue?

If the code is validated and snippets have disappeared overall, analyze concrete quality signals: abnormal bounce rates, declines in visit duration, decreases in engagement (plummeting organic CTR), increases in pogo-sticking detected in Analytics.

Compare your pages with those of competitors who retain their snippets. Is there a clear qualitative gap in terms of content depth, freshness, cited sources, user experience? Google does not publish a precise threshold, but the relative gap compared to the rest of the SERP is often revealing.

What concrete actions can you take to try to recover rich results?

Let’s be clear: there’s no magic button to force the reappearance of snippets. However, certain actions statistically increase the chances of a positive reevaluation.

Enhance the depth and originality of the content on the affected pages. Improve engagement signals (adding media, rephrasing for clarity, strengthened internal linking). Make sure you strictly adhere to the specific policies related to the type of rich result—Google publishes detailed guidelines for each format (reviews, recipes, FAQs, etc.).

  • Validate the markup with the Rich Results Test and check for errors in the Search Console.
  • Perform a site: search AND various contextual searches to isolate the nature of the problem.
  • Analyze engagement signals and compare them to competitors who retain their snippets.
  • Enhance the editorial quality and user experience of the affected pages.
  • Check strict compliance with specific policies for the type of rich result.
  • Monitor the evolution over several weeks—algorithmic reevaluations are never instantaneous.
The disappearance of rich results despite compliant markup is a warning signal regarding your site's algorithmic perception. Precisely diagnosing the real cause—technical, qualitative, or policy-based—requires a multi-criteria analysis and constant monitoring of display behaviors. These cross-optimizations (technical, content, UX) can quickly become complex to manage alone, especially on larger sites. Engaging a specialized SEO agency can provide personalized support and on-the-ground expertise on these critical rich results issues for organic click-through rates.

❓ Frequently Asked Questions

Un balisage techniquement valide garantit-il l'affichage des rich snippets ?
Non. La validation technique est une condition nécessaire mais pas suffisante. Google peut retirer des résultats enrichis si l'algorithme réévalue négativement la qualité globale du site, même si le code reste parfaitement conforme.
Comment distinguer un problème technique d'un problème de qualité ?
Effectuez une recherche site:votredomaine.com. Si les snippets apparaissent en recherche site: mais pas en recherche normale, c'est probablement un problème de qualité perçue. S'ils n'apparaissent jamais, c'est un problème technique ou une violation de politique.
Combien de temps faut-il pour récupérer des rich snippets perdus ?
Il n'existe pas de délai garanti. Les réévaluations algorithmiques de qualité peuvent prendre plusieurs semaines voire mois. Tout dépend de la fréquence de crawl du site et de l'ampleur des améliorations apportées.
Faut-il redemander une indexation après avoir corrigé le problème ?
Oui, utilisez l'outil d'inspection d'URL dans la Search Console pour demander une réindexation des pages concernées. Cela accélère potentiellement la réévaluation, mais ne garantit pas le retour immédiat des snippets.
Tous les types de résultats enrichis sont-ils soumis aux mêmes critères de qualité ?
Non. Chaque type (avis, recettes, FAQ, événements, produits) a des politiques spécifiques et des critères qualitatifs propres. Certains formats sont plus restrictifs que d'autres et subissent des changements de politique plus fréquents.
🏷 Related Topics
Algorithms Domain Age & History Content Structured Data AI & SEO JavaScript & Technical SEO Local Search

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Other SEO insights extracted from this same Google Search Central video · duration 59 min · published on 11/08/2020

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