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Free URL check · explainable math

Know what your SEO score means.

We check one public page, show every point, and tell you what this score cannot know. No email gate. No sales-call ransom.

Public HTTP/HTTPS pages only. We do not store the submitted URL.
Need to know · verify us

Do not take one score as gospel.

Run the same URL through these three established tools. They use different crawlers, data, and scoring systems. A disagreement is information—not automatically proof that either tool is lying.

Google PageSpeed InsightsPerformance, Core Web Vitals, accessibility and Lighthouse diagnostics.Usually free without an account →Ahrefs Free Site AuditBroader site crawl and technical/on-page checks for verified sites.Free account and site verification required →Semrush SEO CheckerTechnical, on-page, performance and prioritized issues.Limited free checks; account limits may apply →

Think our score is wrong?

Good. Tell us the URL, the check, and why. If our rule is wrong, we will fix it publicly.