Rule pack
SEO rules
Whether search engines can index the page, and what they will show for it.
Indexing
Error The page doesn't answer 200 OKindexing.statusError Too many redirects before the pageindexing.redirect-chainError The page tells search engines not to index itindexing.noindexError robots.txt stops search engines reading the pageindexing.robots-blockedWarning No canonical linkindexing.canonical-missingError The canonical link can't be trustedindexing.canonical-invalidError A canonical link points at a page that can't be indexedindexing.canonical-targetWarning The site has no sitemapindexing.sitemap-missingWarning The sitemap lists pages that can't be indexedindexing.sitemap-errorsWarning Language versions that don't link back to each otherindexing.hreflang-pairsWarning Search Console is set up for this sitemanual.search-consoleNotice Bing Webmaster Tools is set upmanual.bing-webmasterError Staging is hidden and production is notmanual.staging-blocked
Meta tags
Error The page has no titlemeta.title-missingWarning The title is too long or too shortmeta.title-lengthWarning The page has no meta descriptionmeta.description-missingNotice The meta description is too long or too shortmeta.description-lengthWarning The page does not say what language it is inmeta.langWarning No viewport tag: phones show the desktop layoutmeta.viewportNotice The character encoding is not declaredmeta.charsetNotice The site has no faviconmeta.faviconWarning Pages share the same titlemeta.title-duplicateNotice Pages share the same meta descriptionmeta.description-duplicate
Content
Warning The page has no main headingcontent.h1Notice The title and the heading are about different thingscontent.title-h1Notice The page has very little textcontent.thinWarning Something is measuring visitsmanual.analytics-installedNotice Your own visits are left out of the numbersmanual.analytics-excludes-teamWarning The Google Business Profile is claimed and rightmanual.business-profile
Links
Warning The secure page loads insecure fileslinks.mixed-contentError Links on the site lead to missing pageslinks.broken-internalNotice Links on the site point at addresses that redirectlinks.internal-redirectWarning Pages in the sitemap that nothing links tolinks.orphanNotice The "page not found" page helpsmanual.404-page-helpful