Official statement
Other statements from this video 13 ▾
- 1:04 Faut-il rediriger ou laisser en 404 les pages obsolètes ?
- 3:17 Comment gérer efficacement une pénalité manuelle Google sans perdre des mois de trafic ?
- 8:06 Changer de CMS fait-il vraiment chuter vos positions Google ?
- 8:32 Faut-il vraiment laisser Google crawler les pages filtrées Magento ?
- 14:35 Le contenu généré par les utilisateurs peut-il nuire au classement de votre site ?
- 16:07 Panda est-il vraiment devenu un signal de qualité permanent pour tous les algorithmes Google ?
- 17:13 Pourquoi vos balises hreflang doivent-elles pointer vers les URL canoniques ?
- 19:11 Les liens nofollow nuisent-ils vraiment au classement SEO de votre site ?
- 21:37 Les backlinks toxiques peuvent-ils vraiment détruire votre SEO ?
- 24:58 Pourquoi vos rich results chutent-ils sans que votre trafic ne bouge ?
- 26:02 Pourquoi Google cache-t-il certaines de vos pages dans les résultats de recherche ?
- 31:27 Les pop-ups mobiles tuent-ils vraiment votre référencement ?
- 45:49 La balise unavailable_after peut-elle vraiment anticiper vos 404 et accélérer la désindexation ?
John Mueller states that redirect chains do not directly degrade the PageRank passed, contrary to popular belief. The real issue lies elsewhere: increased loading times, degraded user experience, and wasted crawl budget. In practice, keep them to a strict minimum, especially on mobile where every millisecond counts.
What you need to understand
Why does this statement challenge a long-held belief?
For years, SEOs have viewed redirect chains as harmful to PageRank. The idea was straightforward: each hop dilutes the juice, similar to a loss of pressure in a pipe. Mueller directly dismantles this myth.
Technically, Google claims to handle multiple redirects without PageRank loss. A page A to B to C transmits the same weight as a direct jump A to C. At least in theory.
So where is the real problem hiding?
The real cost is not algorithmic but technical and UX. Each redirect adds an extra HTTP request. On mobile 3G/4G, with high latency, this translates into lost seconds.
Googlebot has a limited crawl budget per site. Following three redirects instead of one monopolizes three slots. On a large site with thousands of pages, it represents pure waste.
Does this rule apply uniformly to all types of redirects?
301 and 302 redirects are treated differently by Google regarding indexing, but both can form chains. A 301 permanent redirect indicates a permanent change, while a 302 indicates a temporary move.
In practice, it doesn’t matter what the HTTP code is in a chain: the problem remains the multiplication of hops. Google now treats 302 as 301 after a certain period, complicating readability further.
- PageRank travels through chains according to Google, but this claim requires real-world verification
- Loading time mechanically increases with each hop, directly impacting Core Web Vitals
- Crawl budget is consumed faster with series of redirects
- Mobile experience is the first factor penalized by cumulative latencies
- JavaScript redirects are not even mentioned in this statement, a potential blind spot
SEO Expert opinion
Does this statement align with real-world observations?
Let's be honest: many SEOs have observed ranking losses after migrations involving redirect chains. Mueller claims PageRank passes, but empirical data sometimes tells a different story. [To be verified]
There may be a gap between what the algorithm is supposed to do and what it actually does at scale. Or other factors interfere: indexing delays, degraded user signals, misinterpreted 302s.
What critical points does Mueller not mention?
The speed of discovery of new URLs is a blind spot. A chain extends the time before Googlebot reaches the final destination. On a news site, this can delay indexing by several hours.
Another troubling silence: client-side redirects (JavaScript, meta refresh). Mueller clearly speaks of server 301/302 redirects, but many modern sites redirect using JS. Is it treated the same? No indication.
In what cases should you still accept a chain?
Sometimes, you have no choice. An old domain redirects to the new one, which itself has undergone a URL restructuring. Making the old domain point directly to the new URLs entails modifying thousands of rules.
The operational cost can exceed the marginal SEO benefit. In this case, document the chain, measure the real impact on Core Web Vitals, and prioritize strategic URLs for direct cleanup.
Practical impact and recommendations
How can you detect redirect chains on your site?
Use Screaming Frog in "follow redirects" mode to map all hops. Filter URLs with 2+ redirects. Xenu Link Sleuth does the same job, more rustic but effective.
The Search Console does not directly list chains, but look for 404 errors preceded by redirects: this is often a symptom of a broken chain at the end. Google Analytics can also reveal abnormal loading times on certain pages.
What should you do when you find a chain?
Rewrite redirects to point directly to the final destination. If A → B → C, modify the rule of A to point to C. No mercy, even for old forgotten URLs.
Pay attention to internal redirects: your menu links, footer, content should never point to a URL that redirects. Correct at the source in your templates. This saves crawl budget.
What common mistakes exacerbate the problem?
Mixing trailing slash and non-trailing slash in rules: this creates invisible chains. The same goes for www/non-www, http/https if the rules stack poorly in the .htaccess or nginx.conf.
Another classic: migrating without cleaning up the old. You stack a new layer of redirects on the existing ones. Result: A → B → C → D. Audit before, not after.
- Crawl the site quarterly to detect new chains introduced by mistake
- Check that all internal links point to final URLs, without intermediate redirect
- Clean the .htaccess file/server rules to eliminate obsolete rules that stack up
- Test Core Web Vitals on mobile after reducing chains: measure the real impact
- Document compressible chains (third-party domains, technical constraints) and monitor their performance
- Prioritize strategic URLs (high traffic, strong backlinks) for redirect optimizations
❓ Frequently Asked Questions
Une chaîne de 2 redirections fait-elle vraiment perdre du PageRank ?
Quelle est la longueur maximale acceptable pour une chaîne de redirections ?
Les redirections JavaScript comptent-elles dans une chaîne ?
Faut-il corriger les anciennes chaînes héritées de migrations passées ?
Comment prioriser les corrections si j'ai des milliers de chaînes ?
🎥 From the same video 13
Other SEO insights extracted from this same Google Search Central video · duration 55 min · published on 30/05/2017
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