Best Free SEO Audit Tool | 2026SEOChecker.
Frequently Asked Questions
What does the SEO Checker analyze?
It runs a comprehensive audit across 8 categories: technical SEO & performance, meta tags, content quality, structured data, accessibility, E-E-A-T trust signals, mobile optimization, and international SEO. You get a letter grade (A+ to F) with actionable fixes for every issue.
Is this SEO checker free?
Yes, completely free with no signup required. Get instant results with a detailed PDF report.
What is the SEO grade based on?
Your grade is calculated from a weighted score across all 8 categories. Scores 95+ earn an A+, while scores below 45 receive an F. Most websites score between 50-75 (C to B range).
Does this tool estimate Lighthouse scores?
Yes, we estimate Performance, Accessibility, Best Practices, and SEO scores using heuristic analysis of your HTML. Each category includes a confidence level (low/medium/high) since some metrics like Core Web Vitals require browser rendering. For exact scores, run Google Lighthouse directly.