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Martin Adams for MicroEstimates

Posted on • Originally published at microestimates.com

How to Do a Site Audit That Boosts SEO

Site Audit: Your website's full health check

Think of a site audit as a medical exam for your website: a systematic check of technical systems, on-page content, and backlinks to find what’s hurting rankings and conversions — then turn those findings into a prioritized plan to fix them. A quick domain valuation (for example, the Domain Name Value Estimator) can help frame the business impact before you dive in.

Main points

1. Technical SEO: make your site findable

  • Run a full site crawl (Screaming Frog, Ahrefs, Semrush) to spot blocked pages, duplicates, and orphan pages.
  • Check robots.txt first — one misplaced rule can hide your entire site.
  • Keep your XML sitemap clean: remove 404s, old redirects, and low-value URLs so crawlers focus on your important pages.
  • Fix errors and redirects: resolve 404s, replace redirect chains with direct 301s, and prioritize fixes that recover crawl budget and link equity.
  • Ensure HTTPS sitewide — it’s a trust signal and lightweight ranking factor.

2. On-page content and structure: match user intent

  • Audit title tags, meta descriptions, and headers: remove duplicates, fix truncation, and ensure target keywords appear naturally.
  • Enforce clear header hierarchy (one H1 per page, meaningful H2/H3s).
  • Classify pages into three buckets:
    1. Update — pages with potential needing depth or freshness
    2. Consolidate — merge thin, overlapping pages into authoritative resources
    3. Remove — prune or noindex low-value pages
  • Fix orphan pages by adding contextual internal links with descriptive anchor text to distribute authority and aid navigation.

3. Backlink profile: separate helpful links from harmful ones

  • Inventory backlinks from Ahrefs or Semrush and sort by authority, relevance, and anchor text.
  • Identify toxic links and prepare a disavow file if necessary — use Google Search Console carefully.
  • Study competitors’ backlinks to uncover outreach targets and partnership opportunities.

4. UX, performance, and Core Web Vitals

  • Measure Core Web Vitals: LCP (main content load speed), FID (input responsiveness), and CLS (visual stability).
  • Use PageSpeed Insights to find slow scripts, large images, and render-blocking resources.
  • Test mobile usability: navigation, tap targets, and readable fonts matter for conversions.
  • Simplify site architecture: aim to reach key content within three clicks from the homepage; use breadcrumbs and clearer navigation to surface buried pages.

5. Turn findings into prioritized work

  • Group issues by category (technical, content, UX, backlinks) and score by impact vs. effort:
    • Quick wins = high impact, low effort
    • Projects = high impact, high effort
    • Deprioritize low impact, high effort items
  • Benchmark before changes (traffic, rankings, conversions, Core Web Vitals) so you can measure ROI.

6. Tools and cadence

  • Run a full audit at least annually, with quarterly health checks and after major site updates or algorithm shifts.
  • Typical tools: Ahrefs, Semrush, Screaming Frog, Google Search Console, Google Analytics, PageSpeed Insights.

Quick starter checklist

  • Crawl site and check robots.txt
  • Fix indexing and HTTPS issues
  • Clean up sitemap
  • Audit titles, metas, and headers
  • Update, consolidate, or remove content as needed
  • Inventory backlinks and flag toxic domains
  • Measure Core Web Vitals and address the biggest slowdowns
  • Build a prioritized action plan and record benchmarks

Conclusion

A focused site audit turns data into action: fix technical blockers first, then improve content and UX, and finally strengthen off-page authority. Prioritize by impact and effort, measure results, and iterate.

Think you could fix your site’s single biggest blocker in 24 hours? Take the challenge and get the step-by-step playbook: https://microestimates.com/blog/how-to-do-a-site-audit

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