Site Tools
Enter a URL and click Check All Tools — all 12 tools run in parallel. Switch tabs to see each result.
Page Speed
Core Web Vitals via Google PageSpeed Insights API (free, no key needed).
Analyzes all critical on-page SEO meta tags and flags issues.
Finds and validates JSON-LD structured data for Google rich results eligibility.
Verifies HTTPS, HTTP redirects, HSTS security header, and mixed content.
Crawls the page, extracts all links (up to 100), and checks each for 4xx/5xx errors.
Follows redirect chains hop-by-hop, flags chains longer than 2 hops, 302s used for permanent moves, and loops.
Locates your sitemap.xml, counts URLs, validates structure, and checks for missing lastmod dates.
Parses robots.txt rules, detects blocked CSS/JS assets, Disallow: / traps, and missing Sitemap directives.
Detects 50+ technologies from HTML patterns and response headers — CMS, frameworks, analytics, CDN, and more.
Shows how your page appears in Google search, Facebook, Twitter/X, and LinkedIn link previews.
Extracts all H1–H6 headings in document order, visualizes the hierarchy, and flags structure issues.
Compare your on-page SEO against a competitor — find gaps and advantages.