Member Avatar for zorodan

I was analyzing my client’s website, and I came to know that he owns two mirror websites. The content and the design of both the websites are very similar. I do not know if this will affect this online presence. I think that this will make his site duplicated. I want to know what can be SEO solution to make both the sites work. Do I need to add 301 Redirection in order to direct the visitors to one of the sites? If you think that this is an ideal option, then I will try to make my client understand.

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found two near-identical sites. That usually creates a duplicate-content situation for search engines even when the domains differ — it is not limited to copies on the same domain. ’s point about redirects/parked pages is useful: if one hostname simply redirects visitors to the other, that’s a redirect (not duplicate indexed pages). is right to flag that identical internal URLs on two hosts will be treated as duplicate content unless you take steps.

If the goal is a single authoritative site, the cleanest approach is a server-side 301 (permanent) redirect from every URL on the secondary domain to the matching URL on the primary domain, preserve path structure, and update internal links and sitemaps to the canonical host. Verify both hosts in Google Search Console so you can monitor indexing and use the Change of Address tool if you’re doing a full domain move. Also update important backlinks where possible — consolidated links preserve link equity.

If both domains must remain, make their purpose distinct: serve unique content, target different languages/regions with hreflang, or deliberately brand different audiences. Cross-domain rel="canonical" is supported (it tells Google your preferred URL) but is treated as a hint, not an absolute command; 301 redirects are stronger when you can use them. Avoid relying on noindex or robots blocks as the main fix for duplication.

Troubleshooting tips: run site:domain queries and compare indexed page counts, check Search Console coverage and canonical reports, and inspect server logs for crawler patterns. Watch rankings and referral traffic after changes. For official guidance on canonicalization and duplicate URLs see Google Search Central’s “Consolidate duplicate URLs” documentation: Consolidate duplicate URLs.

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Member Avatar for AirForceOne

Hi,

In my own experiences, this would not be treated as duplicated contents as duplicated contents would generally refer to duplication on the same domains. I think if you could make them both high ranking in SERP, there would be no 301 redirection needed.

have a nice day,

Member Avatar for DanLew

From the home page if you click and it takes you to the other site it is most probably just a redirect or parked page, but if all inside pages are same and different urls then it is duplicated.

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