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Official statement

Google will likely avoid following chained canonical links between the pages of an AMP post and the main page of the template. This can lead to the loss of the AMP page in indexing. It is recommended to simplify the canonical structure to avoid edge cases.
3:38
🎥 Source video

Extracted from a Google Search Central video

⏱ 53:42 💬 EN 📅 23/08/2016 ✂ 10 statements
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Other statements from this video 9
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  8. 42:29 Le crawl Google suit-il vraiment les impressions en Search Console ?
  9. 47:07 Les redirections 301 protègent-elles vraiment votre classement lors d'une migration ?
📅
Official statement from (9 years ago)
TL;DR

Google confirms that it may not follow chained canonical links between AMP pages and the main pages. The result: your AMP pages can vanish from the index without warning. The solution? Simplify the canonical structure to create direct links rather than multi-tier chains, especially on complex templates.

What you need to understand

What exactly is a chained canonical link?

A chained canonical link occurs when page A points to page B as its canonical version, which in turn points to page C. Google then has to follow a cascade: A→B→C. In the context of AMP, this often materializes as an AMP post referencing an intermediary page as canonical, which ultimately points to the main page of the site.

This situation frequently arises with complex template architectures. You have a generic template that automatically generates canonicals, followed by AMP variations that inherit this logic. Without careful management, you inadvertently create chains.

Why does Google refuse to follow these chains?

Mueller's statement remains vague about the exact mechanism. It can be assumed that Google applies a depth limit in following canonicals to avoid infinite loops and manipulations. If your chain exceeds this limit, the crawler abandons it.

In practical terms, Google then treats the AMP page as orphaned or refuses to consolidate signals towards the final canonical version. The AMP page risks disappearing from the index, especially if it lacks strong signals elsewhere (backlinks, direct traffic).

Is this rule only applicable to AMP?

Mueller specifically targets AMP in his statement, but the principle applies to any chain of canonicals. AMP is merely a common case where this arises due to misconfiguration. If you have mobile versions, regional pages, or poorly chained language variants, you face the same issue.

The difference: AMP has long had a parallel indexing circuit, so canonical errors are more visible and more punitive there. Since the end of the prioritized AMP carousel, the technical challenge persists for sites maintaining these versions.

  • Implicit limit: Google likely only follows one canonical jump, two at most.
  • Silent disindexing: your AMP pages disappear without notification in Search Console.
  • Frequent edge cases: generic templates + AMP variants = unintentional chains.
  • General principle: this rule goes beyond AMP and concerns any complex canonical architecture.

SEO Expert opinion

Is this statement consistent with field observations?

Yes, and it has been documented for years in audit cases. We regularly see AMP pages lose their indexing when they point to intermediary versions rather than directly to the main page. What is new here is that Mueller explicitly confirms this and uses the term "edge case" — which downplays a problem that is quite common in reality.

What is missing: no numerical indication. How many jumps does Google tolerate? One? Two? The wording "likely" is frustrating for a practitioner who needs certainties. [To verify]: no official data on the maximum acceptable chain depth.

Which sites are truly exposed to this risk?

All sites that still maintain active AMP versions, especially media, blogs, and e-commerce sites that deployed AMP extensively 5-7 years ago. Many have abandoned active maintenance but leave the pages in place "just in case." These inherited architectures are hotbeds of canonical chains.

CMSs that automatically generate AMP templates are particularly at risk: WordPress with AMP plugins, Drupal, proprietary systems. If your architecture relies on generic template rules that have never been audited for AMP, you are likely affected.

Should you really worry if you abandoned AMP?

If you have physically removed your AMP pages and the URLs return 404 or 410, you are in the clear. The problem is that many sites have just stopped updating AMP but leave the pages accessible. Google continues to crawl them.

Let's be honest: if AMP has not brought you anything since the end of the prioritized carousel, why maintain this complexity? Mueller's statement is an implicit incentive to clean up. Either you manage AMP correctly with direct canonicals, or you completely disable it and redirect with a 301.

Warning: check your AMP canonicals even if you think you have disabled AMP. Some CMSs keep the URLs accessible in cache or via CDN even after deactivating the plugin.

Practical impact and recommendations

How can you diagnose if your site is affected?

Start by extracting all your indexed AMP URLs via Search Console. Export the complete list using the query site:yourdomain.com/amp/ (or your specific AMP suffix). For each URL, check the canonical link by inspecting the source code or using a crawler like Screaming Frog.

Trace the chain: if your AMP page points to an intermediary page that points elsewhere, you have a problem. Look particularly for template pages (categories, archives, tags) that often generate these chains due to misconfiguration.

What is the technical correction to apply?

The solution is simple in theory: each AMP page should point directly to its final canonical version. No intermediaries. If you have an AMP page example.com/amp/article-1/, it should contain <link rel="canonical" href="https://example.com/article-1/"> and nothing else.

First, fix the generic templates in your CMS. If you are using WordPress, check the theme files that generate the AMP headers. For custom sites, review the rules for automatic canonical generation. Test on a sample before deploying globally.

Should you keep AMP or remove everything?

Legitimate question. AMP has lost its exclusive advantage with the end of the prioritized carousel and the arrival of Core Web Vitals as ranking criteria. If you are maintaining AMP only out of inertia, simplification comes through removal. Redirect all your AMP URLs to the standard versions with a permanent 301.

If you keep AMP for real performance reasons (AMP cache, specific partnerships), then invest in a complete audit of your canonicals. There are no half-measures: either you manage it properly, or you abandon it. Poorly maintained hybrid structures are the most penalizing.

  • Extract all indexed AMP URLs via Search Console.
  • Crawl AMP pages to identify canonical chains (depth > 1).
  • Fix generic templates to establish direct canonical links.
  • Test on a representative sample before global deployment.
  • If keeping AMP: monitor weekly indexing for 3 months.
  • If abandoning AMP: redirect all URLs in 301 to standard versions.
Managing chained AMP canonicals requires a precise technical architecture and regular monitoring. If your team lacks the resources to audit and fix these complex structures, it may be wise to seek assistance from a specialized SEO agency that has the tools and experience to quickly diagnose these issues and implement lasting corrections adapted to your CMS and architecture.

❓ Frequently Asked Questions

Combien de niveaux de chaînage canonique Google accepte-t-il avant d'abandonner ?
Google ne donne pas de chiffre officiel. Les observations terrain suggèrent qu'au-delà d'un seul saut (A→B→C), le risque de non-suivi augmente fortement, surtout pour AMP. La règle de sécurité : toujours pointer directement vers la version canonique finale.
Est-ce que ce problème concerne uniquement AMP ou aussi les canoniques classiques ?
Le principe s'applique à tous les canoniques chaînés, pas uniquement AMP. AMP est juste un cas fréquent où l'erreur survient à cause de templates mal configurés. Les variantes mobiles, régionales ou linguistiques peuvent créer les mêmes chaînes problématiques.
Comment savoir si mes pages AMP ont disparu de l'index à cause de ce problème ?
Vérifiez l'évolution de l'indexation dans Search Console (section Couverture). Une chute brutale du nombre de pages AMP indexées sans désindexation volontaire est un signal d'alerte. Inspectez ensuite les canoniques de quelques URLs affectées pour confirmer les chaînes.
Faut-il conserver AMP si on a déjà de bons Core Web Vitals ?
Non. Si vos pages standard sont déjà performantes et passent les Core Web Vitals, AMP n'apporte plus d'avantage SEO significatif depuis la fin du carousel prioritaire. Simplifiez votre architecture en supprimant AMP et en redirigeant proprement.
Peut-on utiliser une balise canonical auto-référente sur une page AMP ?
Oui, si votre page AMP est la version principale et unique. Mais dans la majorité des cas, AMP est une variante d'une page standard, donc le canonical doit pointer vers cette version standard, jamais vers elle-même.
🏷 Related Topics
Domain Age & History Crawl & Indexing Links & Backlinks Mobile SEO Pagination & Structure

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