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Introduction The hreflang return-tag valid check shows whether the alternate page linked through hreflang also links back correctly to the current page. This reciprocal relationship is a core part of hreflang implementation and one of the most important checks in international SEO. That is why this is critical for hreflang quality assurance. A page can […]

Introduction The hreflang set is the full map of language and regional alternates declared for a page. It shows which versions of the content are intended for different audiences, such as en-us for United States English or en-gb for British English. This is a high-value signal for international SEO because hreflang only works well when […]

The rendered main content text hash is a fingerprint of the page’s primary rendered text content. It is one of the most useful content monitoring checks because it gives you a reliable way to detect major changes to what the page actually says, not just what exists in the raw HTML. This is often the […]

A canonical via HTTP header is a canonical URL declared in the response headers rather than in the page HTML. It is usually sent through an HTTP Link header and can tell search engines which URL should be treated as the preferred version of the resource. This is an important check because canonical signals do […]

The canonical target status code shows the HTTP response returned by the URL named in a page’s canonical tag. This is an important check because a canonical only works well when it points to a URL that is accessible and valid. If the canonical target stops returning 200, search engines may receive a mixed or […]

A self-canonical check shows whether a page’s canonical tag points to that page’s own final resolved URL. In other words, it checks whether the page is declaring itself as the preferred version. This is a strong health check because self-canonicalisation is often the expected setup for indexable pages that do not need to consolidate signals […]

The canonical present check shows whether a page includes a rel=”canonical” tag at all. This may seem like a simple yes-or-no signal, but it can still be important, especially on sites where duplicate or near-duplicate URLs are common. A missing canonical is not always a problem. Many pages can function perfectly well without one. But […]

The canonical href is the exact URL declared in a page’s rel=”canonical” tag. It tells search engines which version of a page should be treated as the preferred one when similar or duplicate URLs exist. Because this check stores the precise canonical URL from the HTML, it is a high-value signal. Even a small change […]

The robots.txt allowed for CSS check shows whether the CSS files needed by a page can be crawled under the site’s robots.txt rules. This is important because search engines often need access to CSS to render the page properly, understand its layout, and assess how the content is presented. A page can be technically accessible […]

The robots.txt allowed for page URL check shows whether a page’s URL is currently permitted to be crawled under the site’s robots.txt rules. This is a critical signal because robots.txt can block search engines from accessing a page before they even reach its content. When this value changes, it deserves immediate attention. A page may […]