How to do SEO site audit

An SEO site audit systematically evaluates your technical infrastructure, on-page elements, and backlink profile to identify issues preventing rankings. Start with your crawlability foundation—use tools like Screaming Frog or Semrush to crawl your entire site and identify broken links, redirect chains, duplicate content, and crawl errors that waste your crawl budget. Check your robots.txt and XML sitemaps to ensure search engines can access important pages. You'll want to flag pages blocked by noindex tags accidentally, slow loading speeds (test with PageSpeed Insights and Core Web Vitals), and poor mobile responsiveness since these directly impact both rankings and user experience. Pay specific attention to your site architecture—confirm that important pages are within 2-3 clicks from the homepage and that your internal linking structure flows logically rather than orphaning critical pages.

On-page analysis involves reviewing title tags and meta descriptions across templates to ensure they're unique, descriptive, and include target keywords appropriately. Audit your header structure (H1, H2, H3) to confirm pages have one primary H1 and logical hierarchy without skipping levels. Check for thin content pages that provide little value, duplicate page titles or descriptions that confuse search engines, and missing or improperly implemented schema markup that could unlock rich snippets. Create a spreadsheet mapping your primary keywords to landing pages so you can spot keyword cannibalization where multiple pages target the same search intent.

For backlink health, analyze your link profile using Ahrefs or Moz to identify low-quality or spammy domains pointing to your site, then prioritize disavowing toxic links. Review your top-performing pages by traffic and rankings to understand what's working, then compare to underperforming pages targeting similar keywords. Look for patterns—do certain content types, formats, or word counts consistently outperform? This intelligence directly informs your optimization strategy.

Document everything in a prioritized report. Critical items like crawl errors and broken links get fixed immediately. Medium-priority improvements like content optimization typically show results within weeks. Lower-priority changes like internal linking restructuring can be phased in. The audit isn't one-time work—run it quarterly to catch new issues and track whether previous fixes actually moved the needle on rankings and traffic.