Quick Comparison
| Tool Type | Best Free Tools | Paid Tools |
|---|---|---|
| Technical health | Google Search Console, Screaming Frog (500 URLs) | Full crawls, automated prioritisation |
| Page speed | Google PageSpeed Insights, Lighthouse | Continuous monitoring, field data |
| Keyword research | Google Search Console (limited), Google Trends | SEMrush, Ahrefs — full volume data |
| Backlink analysis | Google Search Console (links), Ahrefs Webmaster Tools (limited) | Full backlink databases |
| GEO / AI visibility | ❌ No meaningful free tools | seoandgeo — combined SEO+GEO audit |
| Platform-specific advice | ❌ Not available | seoandgeo — CMS-tailored fixes |
| Actionable prioritisation | ⚠️ Limited | ✅ Prioritised action plans |
The Best Free SEO Tools for UK Small Businesses
Google Search Console (Free)
The most important free SEO tool available. Google Search Console shows you which queries your site appears for, which pages are indexed, Core Web Vitals performance from real users, and any crawling or indexing issues Google has detected. Every website should have Search Console configured — it's free, authoritative, and essential.
What Search Console doesn't do: it doesn't explain why you have issues, doesn't give you competitor data, doesn't check GEO, and doesn't provide platform-specific advice.
Google PageSpeed Insights (Free)
Combines Lighthouse lab data with Chrome User Experience Report (CrUX) field data. The field data (Core Web Vitals) is what Google uses for ranking purposes — the lab data is a diagnostic tool. Free and useful for identifying performance bottlenecks.
Citation capsule: A critical nuance about free tools: Lighthouse scores can be misleading. "Of pages scoring 90+ in Lighthouse in September, 43% didn't meet one or more Core Web Vitals thresholds in the field." Lab scores don't equal real-world performance. Always use PageSpeed Insights' field data section, not just the lab score. Source: Calibre App, 2025.
Screaming Frog SEO Spider — Free Tier (500 URLs)
The free version crawls up to 500 URLs and exports technical data on status codes, meta tags, headings, and response times. Excellent for small sites. Requires technical knowledge to interpret the output effectively.
Ahrefs Webmaster Tools (Free)
Limited free version of Ahrefs for your own site — shows some technical issues and backlink data. Useful as a starting point but, as multiple reviews note, "does not provide real insight into the platform's capabilities."
HubSpot Website Grader (Free)
Quick score across Performance, SEO, Mobile, and Security. Good for a rapid sense-check. Too surface-level to guide action.
Where Free Tools Fall Short
Free tools are valuable for monitoring and basic diagnostics. But they have consistent gaps:
- No GEO analysis: No free tool meaningfully analyses your AI search visibility, ChatGPT citation potential, or Google AI Overview readiness
- No platform-specific advice: Free tools tell you what the issue is, not how to fix it on your specific CMS
- No automated prioritisation: You get data but not a prioritised action plan — deciding what to fix first requires expertise
- Fragmented picture: Nearly 60% of SEO professionals report using multiple tools due to integration challenges — no free tool covers everything in one place
- No context: Free tools flag issues without explaining their business impact or providing implementation guidance
Citation capsule: "Nearly 60% of SEO professionals report using multiple tools due to integration challenges — no single tool covers everything." Using multiple free tools creates fragmented, sometimes conflicting data that's hard to prioritise. Source: Ranklytics, 2025.
When Paying for an SEO Audit Is Worth It
Free tools are the right starting point for any UK small business. But a paid audit delivers different value — not just more data, but interpreted, prioritised, platform-specific action.
A paid audit is worth it when:
- You've used free tools but can't prioritise what to fix first
- You want to know your AI search visibility, not just your Google rankings
- You need fixes tailored to your specific CMS (not generic advice)
- You've implemented changes but aren't sure if they've worked (need re-audit)
- Your competitors are outranking you and you can't identify why
- You're about to redesign or migrate your site and want to preserve your SEO
Our Recommendation
Start with free tools — Google Search Console is non-negotiable. Use PageSpeed Insights for performance data (field data, not just lab scores). Use Screaming Frog's free tier if your site has under 500 pages.
When you need the full picture — combined SEO + GEO scoring, platform-specific fixes, and a prioritised action plan — a paid audit delivers the interpretation and guidance that free tools can't.
Frequently Asked Questions
Is Google Search Console enough for SEO?
Google Search Console is essential but not sufficient on its own. It shows you Google's view of your site — indexation, queries, Core Web Vitals — but doesn't provide competitive analysis, content quality assessment, GEO readiness, or platform-specific fix recommendations. Think of it as necessary but not complete.
Is Lighthouse score important for SEO?
Lighthouse lab scores are useful diagnostics but do not directly influence Google rankings. Google uses real-world Core Web Vitals data from the Chrome User Experience Report (CrUX). A site scoring 95 in Lighthouse can still fail Core Web Vitals in the field — which is what Google measures. Always check PageSpeed Insights' field data section for ranking-relevant performance data.
Can I do SEO myself with free tools?
Yes — Google Search Console and Screaming Frog give you enough data to make significant improvements, particularly for technical issues. The challenge is knowing which issues to prioritise and how to fix them on your specific platform without SEO expertise. A one-off paid audit can provide that roadmap, then you can use free tools to monitor progress.
Check Where Your Site Stands
Start with our free quick scan — then see the full combined SEO + GEO audit if you want the complete picture with platform-specific fixes.