SEO Audit Guide

Audit Tools

ToolUse CaseCost
Google Search ConsoleIndex coverage, CWV, queries, linksFree
Google Analytics 4Traffic, behavior, conversionsFree
Screaming FrogFull site crawl, broken links, redirectsFree (500 URLs) / ยฃ259/yr
AhrefsBacklinks, keywords, competitor analysis$99+/mo
SEMrushKeywords, site audit, position tracking$129+/mo
PageSpeed InsightsCore Web Vitals, performanceFree
Bing Webmaster ToolsBing indexation, SEO reportsFree

Technical Audit Checklist

  • Crawl site with Screaming Frog; review 4xx/5xx errors
  • Check GSC for coverage issues (excluded, errors)
  • Verify robots.txt not blocking important pages
  • Validate XML sitemap (all pages present, correct lastmod)
  • Check for duplicate content (tools vs canonical)
  • Audit redirect chains and loops
  • Measure Core Web Vitals in GSC and PageSpeed Insights
  • Verify HTTPS and no mixed content
  • Check mobile usability in GSC
  • Review hreflang implementation (if multilingual)
  • Check internal link structure and orphan pages
  • Validate structured data in Rich Results Test

Content Audit Checklist

  • Export all URLs from sitemap + GSC
  • Check for thin content (under 300 words with no value)
  • Identify duplicate or near-duplicate pages
  • Find pages with no organic traffic in 12 months (prune or improve)
  • Check title tags: duplicates, too long/short, missing KW
  • Check meta descriptions: missing or duplicate
  • Review content freshness: update outdated articles
  • Find keyword cannibalization (multiple pages for same KW)

Backlink Audit Checklist

  • Export full backlink profile from Ahrefs or GSC
  • Identify toxic/spammy links
  • Check for links from irrelevant niches
  • Review anchor text distribution (over-optimized?)
  • Find lost high-value backlinks (reclaim if possible)
  • Submit disavow file if toxic links can't be removed

Issue Prioritization Matrix

PriorityImpactExamples
CriticalBlocks indexation or causes major traffic lossrobots.txt blocking site, HTTPS down, 5xx errors on key pages
HighSignificant ranking impactBroken canonical, CWV failures, missing title tags
MediumModerate ranking impactThin content, missing meta descriptions, redirect chains
LowMinor improvementsImage alt text, minor structured data warnings