What does Google say about SEO? /

Official statement

Google transfers information and signals from AMP to the canonical URL. For Core Web Vitals, Google tracks the canonical and uses the metrics based on it.
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Extracted from a Google Search Central video

⏱ 996h50 💬 EN 📅 12/03/2021 ✂ 43 statements
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📅
Official statement from (5 years ago)
TL;DR

Google now transfers all signals collected via AMP pages to the declared canonical URL. For Core Web Vitals, the search engine directly monitors the canonical version and measures its own performance, ignoring the metrics of the AMP version. In practical terms: your AMP strategy no longer boosts your CWV scores — only the performance of your standard page matters for ranking.

What you need to understand

What does the transfer of AMP signals to the canonical actually mean? <\/h3>

For years, the question of signal transfer between AMP and canonical <\/strong> has fueled SEO debates. Google finally clarifies: all signals collected via an AMP page — links, engagement, visibility — are now redirected to the canonical URL you declared. No division, no dilution.<\/p>

In practice, if your article published in AMP version <\/strong> generates backlinks or traffic, those signals benefit your standard page. The system recognizes the canonical relationship and consolidates the data. This is a major evolution compared to past uncertainties where some practitioners feared signal cannibalization <\/strong> between the two versions.<\/p>

Why does Google measure Core Web Vitals only on the canonical? <\/h3>

The critical nuance lies in Core Web Vitals <\/strong>. Google no longer measures CWV metrics for your AMP page to evaluate your site. The engine tracks the canonical and collects real user experience data (CrUX) exclusively on that version.<\/p>

This breaks a persistent myth: having an ultra-fast AMP version does not compensate for a slow canonical page. If your standard page shows a catastrophic LCP <\/strong> or an unstable CLS, it’s this score that weights in the ranking. AMP then becomes a delivery format, not a direct SEO performance lever.<\/p>

Does this logic apply to all types of content? <\/h3>

Google does not specify any restrictions by content type. The rule seems universal: whether you publish blog articles <\/strong>, product sheets, or editorial pages, the signal transfer operates identically.<\/p>

There remains a gray area in cases where the canonical itself is an AMP page (full-AMP site). In this scenario, the distinction mechanically disappears. But for the majority of sites that maintain a dual architecture <\/strong> (AMP + standard), the rule is clear: invest in the performance of your canonical.<\/p>

  • All AMP signals <\/strong> (links, engagement, visibility) are transferred to the declared canonical URL <\/li>
  • Core Web Vitals <\/strong> are measured exclusively on the canonical version, never on AMP <\/li>
  • A fast AMP page <\/strong> does not compensate for a slow canonical in ranking calculations <\/li>
  • The canonical relationship <\/strong> must be correctly declared for the transfer to operate frictionlessly <\/li>
  • Full-AMP sites <\/strong> escape this duality since the canonical is itself in AMP <\/li><\/ul>

SEO Expert opinion

Does this statement align with recent field observations? <\/h3>

Yes, and it confirms a trend observable for several months. The audits we conduct show that sites with a performant AMP version <\/strong> but a mediocre canonical do not benefit from any CWV boost. CrUX data always reflects the performance of the standard page.<\/p>

On the other hand, the transfer of conventional signals (backlinks, traffic) was already partially active before this clarification. What Google is formalizing is primarily the strict separation between popularity signals and experience metrics <\/strong>. The former merge, while the latter remain compartmentalized on the canonical.<\/p>

What uncertainties remain in this announcement? <\/h3>

Google remains silent on the timing of the transfer <\/strong>. Are AMP signals consolidated in real time or via spaced crawl cycles? For content with high news value, this delay could impact immediate visibility. [To be verified] <\/strong> in real conditions with traced URLs.<\/p>

Another ambiguity: what happens if the canonical relationship is misdeclared or ambiguous <\/strong>? Does Google arbitrarily choose a URL or ignore the transfer? Experience shows that the engine can impose its own canonical, but nothing is stated about the management of signals in these conflicting cases.<\/p>

Should we still invest in AMP outside of Google News carousels? <\/h3>

Let’s be honest: the pure SEO interest of AMP has collapsed <\/strong>. If you are not targeting the Top Stories carousel or if you have no specific distribution constraints, the effort to maintain a dual architecture becomes hard to justify.<\/p>

It is better to focus your resources on the direct optimization of the canonical: reducing blocking JavaScript, optimizing images, smart lazy loading <\/strong>, server caching. These gains immediately benefit Core Web Vitals without the complexity of maintaining two synchronized versions.<\/p>

Attention <\/strong>: If you disable AMP on a site that depended on it for mobile visibility, plan for a gradual transition. Test first on low-traffic sections and monitor the Core Web Vitals of the canonical for at least one 28-day cycle (CrUX collection period). <\/div>

Practical impact and recommendations

What should you prioritize checking in your current architecture? <\/h3>

Start by auditing the canonical declaration <\/strong> on all your AMP pages. Use the URL inspector in Search Console to confirm that Google correctly recognizes the relationship. A disparity between your declaration and the engine's interpretation can block the transfer of signals.<\/p>

Next, compare the Core Web Vitals of your canonicals <\/strong> via PageSpeed Insights (CrUX data) with those of your AMP pages. If the gap is significant, you know where to focus your efforts: it’s the scores of the canonical that count for ranking, not those of AMP.<\/p>

How to optimize your canonical to capture all the benefits? <\/h3>

If you were maintaining AMP primarily for performance reasons, it's time to transfer those optimizations to the canonical <\/strong>. Adopt AMP best practices (optimized images, critical inline CSS, deferring non-essential JavaScript) directly on your standard page.<\/p>

Test frameworks such as Nuxt or Next.js <\/strong> that allow server-side rendering with progressive hydration. You achieve loading times comparable to AMP without the constraint of a dual architecture. And above all, you are working on the only version that matters for CWV.<\/p>

In what cases should you still keep AMP? <\/h3>

AMP remains relevant if you depend on the Google News carousel <\/strong> or if distribution partners (aggregators, third-party applications) specifically consume this format. In this case, maintain the AMP version but invest heavily in the canonical.<\/p>

For all other sites — e-commerce, corporate blogs, showcase sites — the cost/benefit ratio of AMP no longer justifies its maintenance. It’s better to gradually migrate to a high-performing standard architecture and monitor the evolution of Core Web Vitals post-migration.<\/p>

  • Audit the consistency of canonical tags between AMP and standard pages via Search Console <\/li>
  • Compare the Core Web Vitals CrUX of your canonicals vs AMP to identify discrepancies <\/li>
  • Transfer AMP optimizations (images, critical CSS, lazy loading) to the canonical <\/li>
  • Test the deactivation of AMP on a low-traffic section and measure the CWV impact for 28 days <\/li>
  • Assess whether your dependence on the News carousel still justifies keeping AMP <\/li>
  • Document backlinks pointing to AMP URLs to anticipate potential redirects <\/li><\/ul>
    The absolute priority is now the performance of your canonical page <\/strong>. All signals converge towards it, and only its Core Web Vitals matter for ranking. If your team lacks the expertise to carry out these complex technical optimizations — restructuring architecture, improving CWV, gradual migration — it might be wise to rely on a specialized SEO agency that can manage these projects without degrading your visibility during the transition.<\/div>

❓ Frequently Asked Questions

Si je supprime mes pages AMP, est-ce que je perds les signaux accumulés ?
Non, puisque Google transfère déjà tous les signaux vers la canonique. En supprimant AMP, vous perdez juste le format de diffusion, pas les signaux de popularité ni les métriques — qui étaient de toute façon mesurés sur la canonique.
Les backlinks pointant vers une URL AMP profitent-ils vraiment à la canonique ?
Oui, selon cette déclaration officielle. Google consolide les signaux de liens vers l'URL canonique déclarée, même si le lien pointe initialement vers la version AMP.
Faut-il rediriger les URLs AMP vers la canonique après désactivation ?
Oui, implémentez des redirections 301 pour conserver le jus SEO et éviter les erreurs 404. Documentez les URLs AMP qui reçoivent du trafic ou des backlinks avant de désactiver.
Comment vérifier que Google mesure bien les CWV sur ma canonique et non sur AMP ?
Consultez le rapport Core Web Vitals dans la Search Console : les URLs listées sont toujours les canoniques. Comparez avec PageSpeed Insights (données CrUX) pour confirmer que les métriques correspondent à votre page standard.
Un site full-AMP est-il impacté différemment par cette règle ?
Non, puisque sur un site full-AMP, la canonique est elle-même en AMP. La distinction disparaît : signaux et CWV sont mesurés sur la seule version existante, qui est AMP.

🎥 From the same video 42

Other SEO insights extracted from this same Google Search Central video · duration 996h50 · published on 12/03/2021

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