Canonical URLs are used when you would otherwise have different URLs that point to the same content without actually redirecting. So let's say your domain is example.com; www.example.com and example.com are two different URLs, and if you don't redirect them to a standard (canonical) URL (for instance, example.com), search engines treat the two URLs as completely different pages. This causes the link popularity of the two URLs to be split, which is obviously very bad for SEO.
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当您拥有指向相同内容但没有实际重定向的不同 URL 时，可以使用规范 URL。 假设您的域名是
example.com；www.example.com和example.com是两个不同的 URL，如果您不将它们重定向到标准（规范）URL（例如example.com），搜索引擎将这两个 URL 视为完全不同的页面。 这导致两个URL的链接流行度分裂，这显然对SEO非常不利。Canonical URLs are used when you would otherwise have different URLs that point to the same content without actually redirecting. So let's say your domain is
example.com;www.example.comandexample.comare two different URLs, and if you don't redirect them to a standard (canonical) URL (for instance,example.com), search engines treat the two URLs as completely different pages. This causes the link popularity of the two URLs to be split, which is obviously very bad for SEO.