SEO Audit Tools Compared: Lighthouse, PageSpeed, and GSC
Multiple SEO tools are available, each measuring different aspects of your site. This comparison helps you understand what each tool measures and when to use which tool for auditing your site's SEO health.
Key Takeaways
- No single tool covers all aspects of SEO.
- Lighthouse is an open-source tool built into Chrome DevTools.
- PSI combines Lighthouse lab data with Chrome User Experience Report (CrUX) field data from real users over the past 28 days.
- GSC shows how Google actually crawls and indexes your site.
- It runs automated audits for performance, accessibility, best practices, and SEO.
SERP Preview
Preview how your page appears in Google search results
The SEO Tool Ecosystem
No single tool covers all aspects of SEO. Understanding what each tool measures helps you build a comprehensive audit workflow.
Google Lighthouse
Lighthouse is an open-source tool built into Chrome DevTools. It runs automated audits for performance, accessibility, best practices, and SEO.
Strengths: Free, detailed recommendations, reproducible, CI/CD integration. Limitations: Lab data only (simulated), single-page analysis, no historical data.
Google PageSpeed Insights
PSI combines Lighthouse lab data with Chrome User Experience Report (CrUX) field data from real users over the past 28 days.
Strengths: Real user data, Core Web Vitals pass/fail, free. Limitations: Origin-level field data may mask page-level issues.
Google Search Console
GSC shows how Google actually crawls and indexes your site. It reports indexing status, search queries, click-through rates, and structured data errors.
Strengths: Real crawl and index data, search performance metrics, free. Limitations: Data delay (2-3 days), no competitor analysis.
Comparison
| Aspect | Lighthouse | PageSpeed Insights | Search Console |
|---|---|---|---|
| Data type | Lab | Lab + Field | Real crawl data |
| CWV metrics | Simulated | Real user + simulated | Real user |
| SEO audit | Basic | Basic | Comprehensive |
| Indexing status | No | No | Yes |
| Search queries | No | No | Yes |
| Competitor data | No | No | No |
Recommended Workflow
- Weekly: Check Search Console for new errors and indexing issues.
- Monthly: Run Lighthouse audits on key pages.
- After changes: Use PageSpeed Insights to verify CWV aren't impacted.
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