What is a Website Score?
Learn what the SiteIndex diagnostic score measures, how categories are weighted, and where its limits are.
The short answer
The SiteIndex Website Score is a diagnostic summary of publicly observable SEO, performance, security, accessibility, and technical signals. It is not a Google ranking score.
Use the free Website Score CheckerUse the free SSL Certificate CheckerUse the free Headers CheckerStep by step
- Open Website Score and enter a public HTTP or HTTPS URL.
- Review the overall score and category scores.
- Open failed and warning checks for specific recommendations.
- Fix the highest-impact issues, then run a new analysis.
Technical details
- The analyzer checks one public page plus limited same-site robots.txt and sitemap resources. It applies category weights described in the methodology.
Common mistakes
- Treating the score as a certification.
- Assuming one page represents an entire site.
- Ignoring the explanation behind a category score.
Limitations
- It does not crawl an entire site, run a real-user performance study, or assess business content quality.
Related SiteIndex tool
Measure a public website's SEO, performance, accessibility, security, and technical health.
Use Website ScoreLearn moreCheck an SSL certificate's expiry date, issuer, covered hostnames, chain of trust, and TLS version for any domain.
Use SSL CheckerLearn moreReview HTTP response headers for caching, content type, security, and debugging information.
Use Headers CheckerLearn more