What Is an SEO Audit and Why Does Your Website Need One?
An SEO audit is a structured health check of how well search engines can find, understand and trust your website. Here's what one covers, what it costs you not to do one, and how to get started.
Key takeaways
- An SEO audit checks four areas: technical health, on-page content, off-page authority and (for local businesses) local signals.
- Its job is to find what stops you ranking and rank those problems by impact.
- You need one after a traffic drop, before or after a redesign, and at least twice a year.
- You can run a solid audit with free tools such as Google Search Console and PageSpeed Insights.
An SEO audit is a structured review of your website to find everything that stops it from ranking as well as it could in search engines. Think of it as a health check: it diagnoses problems and tells you which to fix first.
What an SEO audit covers
| Area | What it checks | Example problems |
|---|---|---|
| Technical | Can Google crawl, render and index your pages? | Pages blocked by robots.txt, broken redirects, slow mobile pages |
| On-page | Does each page clearly answer what searchers want? | Weak titles, thin content, missing headings, duplicate pages |
| Off-page | Do other sites trust and reference you? | Few quality backlinks, spammy links, inconsistent brand mentions |
| Local (if relevant) | Do you appear in Google Maps and local results? | Incomplete Google Business Profile, inconsistent address details |
| AI search (increasingly) | Do AI answers cite or mention you? | Content hard to quote, weak brand signals |
Signs you need an audit now
- Organic traffic or rankings dropped, especially around a Google update
- You’re planning a redesign, migration or platform change
- You’ve published lots of content but traffic isn’t growing
- You don’t know which pages actually bring customers
- You inherited a site from a previous agency or developer
What an audit isn’t
An audit isn’t a list of 300 warnings from a tool. Automated crawlers flag many issues that don’t matter. A useful audit prioritises: what’s broken, what’s holding you back most, and what will move results fastest.
How often to audit
- Full audit: at least twice a year, and after any major site change
- Light monthly check: Search Console coverage, top pages, broken links, speed
Read how often you should run an SEO audit for a schedule.
Can you do it yourself?
Yes. Free tools cover most of what you need:
- Google Search Console: indexing, performance, Core Web Vitals, manual actions
- PageSpeed Insights: speed and Core Web Vitals per page
- GA4: which pages bring visitors and conversions
- A free crawler for broken links, redirects and duplicate titles
Follow our step-by-step SEO audit guide, and use how to interpret your SEO audit report to prioritise what you find.
When to bring in an expert
If your site is large, revenue-critical, recently lost traffic or is going through a migration, an experienced eye saves time and avoids costly mistakes. Request an expert SEO audit.