The canonical conflict flag shows whether a page is sending mixed canonical signals across different sources, such as HTML canonicals, HTTP header canonicals, redirects, or internal references. This is a useful summary field because canonical problems are often not caused by one signal alone, but by disagreement between several. That disagreement matters because search engines […]
Canonical target indexability
The canonical target indexability check shows whether the URL named in a page’s canonical tag is itself indexable. This is a useful quality check because a canonical signal is much stronger when it points to a page that search engines can actually index. A canonical tag may look technically correct on the source page, but […]
Robots.txt allowed for images
The robots.txt allowed for images check shows whether the key images used by a page can be crawled under the site’s robots.txt rules. This is especially relevant on media-rich pages, where images play an important part in content quality, search visibility, and how the page is understood. This is not usually as critical as blocking […]
Indexability state
The indexability state is a computed yes-or-no view of whether a page is currently indexable. Rather than looking at one signal in isolation, it combines several of the most important checks that influence whether a page can realistically remain in search results. This makes it a very useful summary field. A page may look fine […]
Response time
Response time measures how long the server takes to respond to a request, usually in milliseconds. It is a useful operational check because sudden changes can reveal hosting, application, database, or caching issues before they become more obvious elsewhere. This is not usually a direct SEO switch in the way that a noindex tag or […]
Response content type
The response content type is the value returned in the HTTP Content-Type header. It tells browsers and search engines what kind of resource the URL is serving, such as an HTML page, a PDF, JSON, or an image. This is a useful check because a page can still return a normal status code while serving […]
Canonical host/protocol variant
Introduction The canonical host/protocol variant is the normalised version of a page’s host and protocol, such as https://www.example.com or https://example.com. It is a useful way to track whether a page is resolving on the expected combination of protocol and hostname. This matters because even when the path stays the same, a shift between HTTP and […]
Hreflang return-tag valid
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 […]
Hreflang set
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 […]
Rendered main content text hash
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 […]