Issue library
Every check SiteAud!tLint runs during an audit, with the reason it matters and the fix. These are the same explanations you see in the app, the HTML report and the issues CSV.
- Critical 15 checks. Blocks indexing, breaks pages or loses traffic. Fix these first.
- Warning 28 checks. Weakens rankings, crawling or measurement. Fix after critical issues.
- Opportunity 28 checks. A smaller improvement with a modest effect on its own.
- Info 6 checks. A note for review. It never lowers the score.
Technical SEO 21
- CriticalClient error (4xx)
- CriticalPage could not be fetched
- CriticalRedirect loop
- CriticalServer error (5xx)
- WarningBlocked by robots.txt
- WarningCould not audit: rate limited
- WarningNo XML sitemap found
- WarningNoindex directive
- WarningNon-200 URL in XML sitemap
- WarningNon-indexable URL in XML sitemap
- WarningRedirect chain
- OpportunityMissing canonical tag
- OpportunityNo robots.txt file
- OpportunityURL contains a double slash
- OpportunityURL contains non-ASCII characters
- OpportunityURL contains underscores
- OpportunityURL contains uppercase letters
- OpportunityURL over 115 characters
- InfoCanonical points to another URL
- InfoRedirecting URL
- InfoURL contains parameters
On-Page SEO 12
- CriticalMissing title tag
- WarningDuplicate title
- WarningMissing H1
- WarningMissing meta description
- WarningMultiple title tags
- OpportunityDuplicate meta description
- OpportunityIncomplete Open Graph tags
- OpportunityMeta description over 160 characters
- OpportunityMeta description under 70 characters
- OpportunityMultiple H1 headings
- OpportunityTitle over 60 characters
- OpportunityTitle under 30 characters
Images 1
Structured Data 2
Performance 2
Accessibility 2
Security 3
Internal Linking 10
- CriticalBroken page with backlinks
- CriticalLinks to broken internal pages
- WarningBacklinked page not indexable
- WarningLinks to broken external pages
- OpportunityBacklinks point to a redirect
- OpportunityDeep page (more than 4 clicks)
- OpportunityInternal links without anchor text
- OpportunityLinks to redirecting internal URLs
- OpportunityNon-descriptive anchor text
- OpportunityOrphan page (sitemap only)
AEO / GEO 3
Tracking & Analytics 18
- CriticalGA4 sent by page code and by GTM
- CriticalGTM container not published or wrong ID
- CriticalPage view sent twice on one page load
- CriticalPersonal data or tokens in URL
- CriticalPixel initialised twice on the page
- CriticalTag loaded twice on the page
- CriticalTracking before consent
- WarningAnalytics tag missing on this page
- WarningDifferent GA4 ID than the rest of the site
- WarningMore than one GA4 property on the page
- WarningNo analytics or tag manager found
- WarningTracking without a consent tool
- WarningUniversal Analytics code still present
- OpportunityGTM tag without a trigger
- OpportunityMarketing tag hard-coded outside GTM
- OpportunityNo custom events tracked
- InfoMore than one GTM container on the page
- InfoSeveral analytics tools on the site