ThymesnowWe do your marketing for you ThymelabDo it yourself, all in one place

The check library

Every check we run. All 90.

The real catalogue, in full: what each check looks for, why it matters, and whether we write the fix.

90Checks, run on every crawl

49Where the engine writes the fix itself

6Critical, meaning a page can be dropped

12Areas the catalogue covers

Technical and crawl · 17

criticalPage is blocked from indexingpage_noindexneeds a decision criticalServer errorpage_5xxneeds a decision criticalRedirect loopredirect_loopneeds a decision criticalrobots.txt blocks a page that should rankrobots_blocks_importantneeds a decision criticalPage is not served over HTTPSno_httpsneeds a decision highBroken internal linkpage_404_linkedfix written highNo XML sitemap foundno_sitemapfix written highHTTPS page loads insecure resourcesmixed_contentneeds a decision highCanonical points to a different pagecanonical_mismatchneeds a decision mediumRedirect chainredirect_chainfix written mediumOrphan pageorphan_pagefix written mediumSitemap lists pages that cannot be indexedsitemap_contains_non_indexablefix written mediumSitemap omits pages that are live and indexablesitemap_missing_pagesfix written mediumNo canonical tagcanonical_missingfix written lowNo robots.txtrobots_missingfix written lowPage is more than four clicks from the homepagedeep_pagefix written lowNo lang attribute on the html elementno_lang_attributefix written

Content and on-page · 17

highDuplicate page contentduplicate_contentneeds a decision highMissing title tagtitle_missingfix written highThin contentthin_contentneeds a decision mediumDuplicate title tagduplicate_titlefix written mediumMissing meta descriptionmeta_description_missingfix written mediumNo H1 headingh1_missingfix written mediumPage links to nothing internallyno_internal_links_outfix written mediumContent has not been updated in over 18 monthscontent_staleneeds a decision mediumSeveral pages target the same querykeyword_cannibalisationneeds a decision mediumImage without alt textimage_alt_missingfix written lowDuplicate meta descriptionduplicate_meta_descriptionfix written lowTitle is longer than the search snippettitle_too_longfix written lowTitle is very shorttitle_too_shortfix written lowMeta description is outside the snippet lengthmeta_description_lengthfix written lowMore than one H1h1_multiplefix written lowHeading levels skipheading_hierarchy_brokenfix written lowHeadings carry no topical informationno_meaningful_headingsfix written

Speed and Core Web Vitals · 7

highServer response is slowslow_responseneeds a decision mediumPage weight is largeheavy_pageneeds a decision mediumVery large JavaScript payloadexcessive_javascriptneeds a decision mediumRender-blocking stylesheets and scriptsrender_blocking_resourcesneeds a decision lowImage uses a legacy formatimage_legacy_formatfix written lowImage has no width and heightimage_no_dimensionsfix written lowBelow-the-fold images load eagerlyimage_no_lazy_loadingfix written

Structured data · 6

highStructured data is invalidschema_invalidfix written highStructured data does not match the visible pageschema_contradicts_pageneeds a decision mediumNo structured dataschema_missingfix written mediumStructured data is missing required propertiesschema_missing_requiredfix written mediumNo Organization or LocalBusiness markup on the homepageno_organization_schemafix written lowNo breadcrumb markupno_breadcrumb_schemafix written

AI answers (AEO and GEO) · 11

criticalThe page's content only exists after JavaScript runscontent_needs_javascriptneeds a decision highAI crawlers are blockedai_crawler_blockedfix written highTitle or description is injected by script rather than servedmeta_needs_javascriptneeds a decision highAn SEO tool is injecting fixes client sideseo_injection_scriptneeds a decision highBody content is not present in the served HTMLcontent_not_extractableneeds a decision mediumPage does not answer its question directlyno_direct_answerfix written mediumNo citable facts or datano_citable_factsneeds a decision mediumNo identifiable authorno_author_attributionneeds a decision mediumThe brand entity is not definedentity_unclearfix written lowNo llms.txtmissing_llms_txtfix written lowQuestions are answered without FAQ structureno_faq_structurefix written

Local and maps · 8

highBusiness name, address or phone is inconsistentnap_inconsistentneeds a decision highAddress and phone are not on the sitenap_missingfix written highGoogle Business Profile is incompletegbp_incompletefix written mediumNo recent Google Business Profile postsgbp_no_recent_postsfix written mediumReviews have no responsereviews_unansweredfix written mediumNo landing page for this locationmissing_location_pagefix written mediumNo LocalBusiness markupno_local_schemafix written lowMissing directory citationcitation_missingneeds a decision

Authority and links · 6

highToxic backlinks detectedtoxic_backlinksneeds a decision highNo backlink data source connectedbacklinks_not_connectedneeds a decision mediumBacklinks lostlost_backlinksneeds a decision mediumBrand mentioned without a linkunlinked_mentionneeds a decision mediumCompetitors have substantially more referring domainsauthority_gapneeds a decision mediumNothing on the site is worth linking tono_linkable_assetneeds a decision

International targeting · 3

highHreflang has no return taghreflang_missing_returnfix written mediumInvalid hreflang language or region codehreflang_invalid_codefix written lowNo x-default hreflangno_x_defaultfix written

Ecommerce · 3

highProduct markup is missing merchant listing fieldsproduct_schema_incompletefix written highFaceted navigation is generating crawlable duplicate URLsfaceted_nav_crawl_wasteneeds a decision mediumProduct pages carry no review markupno_product_reviewsneeds a decision

Experience and conversion · 4

highPage format does not match search intentintent_mismatchneeds a decision highPage is not mobile friendlymobile_unfriendlyfix written mediumNo clear call to actionno_clear_ctaneeds a decision lowNo Open Graph or Twitter cardno_social_previewfix written

Compliance and risk · 4

highHealth, legal or financial content with no stated credentialsymyl_no_credentialsneeds a decision highClaim published without substantiationunsubstantiated_claimneeds a decision mediumAffiliate or sponsored content without disclosuremissing_disclosurefix written mediumNo privacy policy foundno_privacy_policyneeds a decision

Measurement · 4

highNo analytics tag detectedanalytics_missingneeds a decision highSearch Console is not connectedgsc_not_connectedneeds a decision mediumAnalytics is not connected to the platformga4_not_connectedneeds a decision mediumNo conversion trackingconversion_tracking_missingneeds a decision

Why the whole catalogue is public

A false positive is more expensive than a miss. One wrong high-severity finding teaches you to discount the severe ones, which are the only ones worth reading, so a check gets narrowed rather than left to fire loosely. Publishing the catalogue is what makes that claim checkable instead of something we say.

The same codes, severities and weightings run in both engines, the one in your browser and the one on a server installation, so the same problem scores the same way wherever it is found.

Run all 90 against your site

About four minutes, in your browser. No account, no card. Every finding that can arrive with the fix already written, does.

See what we would fix this week Look inside a live account