Best free technical SEO audit tool
HubSEO provides an evidence-based free technical SEO audit tool for modern websites. It tests Core Web Vitals, Schema.org structured data, and AI crawler permissions in real time. Rather than arbitrary overall scores, it delivers actionable, prioritized code fixes backed by measured browser and network diagnostics.
What HubSEO Measures in a Free Technical Scan
Every free audit runs in a dedicated cloud sandbox that benchmarks your website across the four foundational pillars of modern technical search optimization.
Instead of hiding diagnostic details behind a mandatory signup form, HubSEO displays your complete technical report with verified code solutions immediately.
| Audit Category | Metrics Tested | Key Deliverables |
|---|---|---|
| Core Web Vitals | LCP, INP, CLS, TTFB | Exact millisecond timings & CSS/image fix recipes |
| Schema Markup | 7 Schema.org types, JSON-LD | Syntax validation & Google Rich Result eligibility |
| AI Crawler Access | GPTBot, ClaudeBot, PerplexityBot | Robots.txt status grid & firewall check |
| Accessibility | ARIA roles, color contrast, alt text | WCAG 2.1 compliance issue matrix |
How to Action Your Free Audit Report
Follow our structured four-step workflow to resolve detected technical blockers quickly:
- 1Review your top 3 ranked high-impact technical issues.
- 2Copy the developer-ready code snippets and apply them to your codebase.
- 3Run a live verification re-test to confirm the issues are resolved.
- 4Schedule automated bi-weekly monitoring to prevent future regressions.
Frequently Asked Questions
Is the free SEO audit really free with no signup?
Yes. You can test any public URL instantly without providing an email address, password, or credit card.
How long does a free technical audit take?
Audits typically complete in 15 to 30 seconds as our cloud engine crawls and benchmarks the target website.
Can I audit staging or password-protected websites?
Free audits test publicly accessible URLs. Staging sites require our authenticated dashboard environment.
What happens after I complete the audit?
You can copy recommended code diffs, download an executive summary, or optionally upgrade for continuous monitoring.