10 Free SEO Audit Tools That Check 50+ Ranking Factors

SEO auditing does not have to cost hundreds per month. I built 10 free SEO tools that together check over 50 ranking factors. The SEO Toolkit 1. SEO Audit Tool Enter any URL, get a score (0-100) covering technical SEO, content quality, performance, and security. 2. Broken Links Checker Find 404 errors, redirect chains, and timeout issues. 3. Website Tech Stack Detector Identify React, WordPress, Shopify, analytics, CDNs. 4. PageSpeed Scraper Measure TTFB, FCP, LCP, TBT, and CLS. 5. Meta Tags Extractor Audit Open Graph, Twitter Cards, canonical URLs. 6. Keyword Density Analyzer Keyword frequency and density percentages. 7. Sitemap Scraper Parse XML sitemaps with all metadata. 8. Robots.txt Analyzer Crawl rules, blocked paths, AI crawler directives. 9. SSL Certificate Checker Validity, expiry, issuer, encryption. 10. HTTP Headers Checker CSP, HSTS, X-Frame-Options, Cache-Control. All free on Apify. Search knotless_cadence. SEO Toolkit on GitHub 60+ scrapers Free reports