AI SEO — Site Audit
How to audit
your website
using AI.
A professional SEO audit costs R5,000–R10,000. A DIY audit using free tools and AI will get you 80% of the same insights in a few hours. Here's exactly how to do it.
What an SEO audit actually covers
An SEO audit is a systematic review of everything that affects your site's ability to rank. It's not one thing — it's four distinct areas, and you need to check all of them because a problem in any one can undermine work done in the others.
Area 01
Technical SEO
- Site speed and Core Web Vitals
- Mobile-friendliness
- Crawlability and indexing
- Broken links and 404 errors
- Duplicate content and canonical tags
- HTTPS and security
- XML sitemap and robots.txt
Area 02
On-Page SEO
- Title tags — unique, keyword-relevant, correct length
- Meta descriptions — compelling, not truncated
- H1 and heading structure
- Content quality and depth
- Keyword targeting and intent match
- Internal linking structure
- Image alt text
Area 03
Off-Page Signals
- Backlink profile quality
- Referring domains
- Brand mentions across web
- Toxic or spammy backlinks
Area 04
Local SEO (if relevant)
- Google Business Profile completeness
- NAP consistency across directories
- Local citation building
- Review volume and recency
- Location-specific pages
What AI changes about this
AI doesn't crawl your site. What it does is help you interpret the data you collect and prioritise what to fix. Feed it your GSC data, your PageSpeed score, or a list of issues — it will tell you what matters most and what to do about it.
Free tools you'll need before involving AI
| Tool | What it tells you | Where to find it |
|---|---|---|
| Google Search Console | Indexing issues, crawl errors, which queries and pages get impressions, Core Web Vitals, mobile usability | search.google.com/search-console |
| Google PageSpeed Insights | Site speed score, Core Web Vitals, specific performance issues | pagespeed.web.dev |
| Google's Mobile-Friendly Test | Whether Google can render your site on mobile | search.google.com/test/mobile-friendly |
| Screaming Frog (free tier) | Up to 500 URLs — title tags, meta descriptions, H1s, broken links, redirects | screamingfrog.co.uk |
| Ahrefs Webmaster Tools (free) | Backlink profile, domain rating, top pages by organic traffic | ahrefs.com/webmaster-tools |
| Rank Math SEO (WordPress) | On-page scores, schema, sitemap, redirects — if you're on WordPress | rankmath.com |
Technical audit with AI — what to check and how
Step 1: Pull your GSC coverage report
In Google Search Console: Index → Pages. Note how many pages are indexed vs excluded. For excluded pages, check the reason — "Crawled but not indexed" is the most common problem and often the most impactful to fix.
Step 2: Check Core Web Vitals
GSC → Experience → Core Web Vitals. Any URLs showing as "Poor" need attention. Then run your homepage through PageSpeed Insights for a detailed breakdown of what's slowing it down.
Step 3: Run a Screaming Frog crawl
Even the free 500-URL limit is enough for most small SA business sites. Look for: pages with missing title tags, duplicate title tags, title tags over 60 characters, missing H1s, broken internal links (404s), and redirect chains.
Step 4: Feed your findings to AI
This is where AI becomes useful. Paste your issue list into ChatGPT or Claude and ask it to prioritise and explain. See the prompt below.
On-page audit with AI
For on-page, AI can actually read your pages and give you actionable feedback — not just interpret data. The most useful approach is to paste your page content directly into the AI and ask specific questions about it.
Copy-ready audit prompts
Audit Prompt 01
GSC data interpretation
I've run a basic SEO audit on my website. Here are the issues I found: [Paste your list of issues here — from GSC, Screaming Frog, PageSpeed, etc.] My website is [your URL]. It's a [describe your business] based in [location], South Africa. The site is built on [WordPress/Wix/Squarespace/custom]. Please: 1. Prioritise these issues in order of SEO impact — what will make the biggest difference to rankings if fixed? 2. For the top 5 issues, explain in plain English what the problem is and exactly what I need to do to fix it 3. Flag any issues that need a developer vs ones I can fix myself 4. Identify anything that might be causing pages not to rank even if other signals look fine
Audit Prompt 02
On-page content audit
I want you to audit the SEO of this page. Here is the full page content: [Paste your page content here] The target keyword for this page is: [keyword] My business: [brief description] in [location], South Africa Target reader: [describe who this page is for] Please audit: 1. Title tag — is it optimised, the right length, compelling enough to get clicks? 2. Does the content match the search intent for this keyword? 3. What is missing that a well-ranking competitor page would include? 4. Heading structure — is it logical and keyword-relevant? 5. Internal linking opportunities — what related pages should this link to? 6. What schema markup would help this page? Give me a prioritised list of changes with clear before/after examples for the most important ones.
How to prioritise what you find
Every audit produces more issues than you can fix in one go. The prioritisation framework that works:
Fix immediately: 404 errors on important pages, pages excluded from Google's index that should be indexed, missing title tags on key pages, site not loading on mobile.
Fix this month: Slow page speed (below 50 on mobile), duplicate title tags, pages with no H1, broken internal links, missing meta descriptions.
Fix when you have capacity: Image alt text, schema markup additions, internal linking improvements, content gaps on existing pages.
Don't obsess over: Minor speed optimisations that move you from 78 to 82, exact keyword density, pages with thin content that get zero traffic anyway.
Want a professional audit?
NoGravy site audits
from R6,500.
Full technical, on-page, content, and local SEO review. Prioritised action plan. Cape Town based. Lindsay Campbell direct.