Instant SEO audit for any website
Paste any URL and get a free SEO score in seconds. See what's working, what's broken, and how to fix it. Download a full PDF report with actionable recommendations.
What we check
- HTML foundations — Title tags, meta descriptions, canonical URLs, viewport, and more
- Open Graph and social — og:image, Twitter cards, and social sharing previews
- Structured data — JSON-LD blocks including WebSite, Organization, and Product schemas
- Content structure — Heading hierarchy, internal links, image alt text, and body content
- AI readiness — robots.txt, sitemap, and llms.txt for AI crawlers
- Technical SEO — HTTPS, lazy loading, font optimization, and security headers
Free SEO analysis
SEOFlash checks 40+ SEO signals and gives you a score out of 100 with a letter grade. Enter your URL above to get started — no signup required.
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