Do 302 redirects really pass as much PageRank as 301s?

Why does this statement from Google challenge common beliefs?

For years, the classic SEO doctrine claimed that a 302 redirect did not pass as much PageRank as a 301. The reasoning seemed logical: a 302 indicates a temporary redirect, so why would Google transfer authority to an URL that is supposed to disappear?

However, Google has come to break this myth. John Mueller confirms that both types of redirects pass exactly the same signals — including PageRank. No loss, no mysterious coefficient that would reduce the juice transferred. Algorithms do not distinguish between temporary and permanent when it comes to transferring authority.

What is the real difference between 301 and 302?

It all comes down to canonicalization. A 301 redirect sends a clear signal to Google: the original URL no longer exists, index the target. End of story.

With a 302, Google remains uncertain. It may choose to index the original URL, the target, or even juggle between the two depending on the context. Practically? If you leave a 302 active for six months, you risk seeing the old URL persist in the SERPs while the new one accumulates signals without appearing. Not ideal for your SEO coherence.

In what situations does this nuance cause problems?

The majority of website redesigns default to using 301s — and it makes sense. But some scenarios require a 302: A/B testing, temporarily switching to a maintenance page, or moving URLs for a specific event.

The trap? Believing that a 302 keeps the old URL indexed indefinitely. In practice, if the redirect lasts several weeks, Google often ends up treating the 302 as a 301. It switches indexing to the target — but there’s no official guarantee on this timing. You’re left in the dark.

• Identical PageRank transmission between 301 and 302, no loss of SEO juice
• The 301 consistently transfers indexing to the target
• The 302 can leave the original URL indexed, potentially creating ambiguity
• Google may reclassify a long-term 302 as an implicit 301 — no documented timing
• Use a 302 only for truly temporary redirects (less than 2-3 weeks)

Is this statement consistent with real-world observations?

Yes and no. Regarding pure PageRank transfer, tests conducted in recent years — especially through controlled migrations — show that a well-configured 302 does not seem to cause ranking drops once Google switches indexing. No visible authority bleed.

But — this is where it gets tricky — the switching delay remains random. Some 302s switch in a few days, others drag on for weeks with the old URL still indexed. During this time, you might observe visibility fluctuations, not due to loss of juice, but because of confusion in indexing. Google hesitates, the site loses coherence.

What nuances should be applied to this rule?

Mueller talks about signals transmitted, not a guarantee of consistent indexing. This is crucial. A 302 can transmit 100% of PageRank… while allowing your old URL to hog the SERPs for a month. The result: no juice loss, but erratic visibility.

Another point: this assertion pertains to standard redirects, not complicated cases. A chain of multiple 302s? A mix of 302/301 in a poorly executed migration? Here, we enter a gray area where Google may lose patience and devalue everything. [To be verified]: no official data on Google’s behavior regarding mixed redirect chains exceeding three hops.

In what situations does this rule not apply?

If you use a 302 to disguise a permanent migration — for example, believing you can easily revert — you’re shooting yourself in the foot. Not concerning PageRank, but regarding the coherence of your indexing.

Another problematic scenario: geo-targeted or user-agent based 302s. Google crawls from US IPs, using a bot user-agent. If your 302 only applies to certain users, Googlebot may never see it — or worse, see it intermittently. You create chaos in indexing without even knowing it.

What practical actions should you take with this information?

Continue to use 301s by default for all permanent migrations. This is the only way to ensure a clean and quick switch in indexing. No floating, no ambiguity.

Reserve 302s for genuinely temporary cases: scheduled maintenance, short-term A/B tests (less than two weeks), specific events. And in these cases, monitor the Search Console to check that Google isn't permanently indexing the target — a sign it has reclassified your 302 as a 301.

What mistakes should you absolutely avoid?

Never leave a 302 active beyond its initially intended period. If your "temporary test" lasts three months, you create unnecessary indexing fog. Switch to 301 as soon as the permanence is confirmed.

Avoid mixed redirect chains. A URL going through a 302, then a 301, then another 302? Google will follow, but you increase the risks of latency and misinterpretation. Simplify your chains — ideally, one direct redirect to the final target.

How can you ensure your configuration is optimal?

Use a tool like Screaming Frog or OnCrawl to audit all your redirects. Identify any 302 redirects that have been hanging for more than four weeks — these are candidates for conversion to 301.

Check in the Search Console which URL is indexed: the old one or the target? If it's the old one while you wanted to migrate permanently, your 302 is working against you. Correct immediately to 301.

• Audit all existing redirects to identify "forgotten" 302s that have been active for over a month
• Convert any redirect that should be permanent to 301 — no compromises
• Check in the Search Console which URL is actually indexed after each redirect
• Avoid redirect chains: always point directly to the final URL
• Document each 302 with a planned end date — and stick to it
• Monitor fluctuations in organic traffic after implementing any redirects