All tools
Free, no account needed. Every result explains the issue, the evidence and the fix.
Full audit
Monitoring & alerts
Developers
AI & SEO
- AI Visibility CheckerDoes AI know & cite your brand? (GEO)
- AI Readiness CheckerHow LLMs and AI agents read your page
- AI Crawler Log AnalyzerWhich AI bots actually visit — from your access log
- llms.txt CheckerValidate llms.txt & llms-full.txt
- robots.txt CheckerCrawl rules, sitemap & AI policy
- Sitemap CheckerValidate sitemap.xml & find dead links
- Structured Data CheckerValidate JSON-LD schema.org markup
- On-Page SEO CheckerTitle, meta, canonical, headings & more
- Link Preview & OG CheckerHow links look on Google, X, FB, LinkedIn & Slack
Generators
- AI robots.txt GeneratorAllow or block AI crawlers explicitly
- llms.txt GeneratorDraft llms.txt from your sitemap
- Security Headers GeneratorHSTS, CSP, X-Frame-Options & more
- SPF GeneratorBuild a valid SPF record
- DMARC GeneratorBuild a valid DMARC record
- JSON-LD GeneratorBuild schema.org structured data
- Open Graph GeneratorOG & Twitter card meta tags
- CAA GeneratorRestrict certificate issuance
- MTA-STS & TLS-RPT GeneratorEnforce SMTP TLS with reporting
DNS & email
- DNS LookupAll records + SPF & DMARC
- MX LookupA domain's mail servers by priority
- SPF CheckerSPF record & 10-lookup limit
- DMARC CheckerDMARC record & policy strength
- DKIM CheckerValidate a DKIM key by selector
- CAA CheckerWhich CAs may issue certificates
- WHOIS / RDAP LookupRegistrar, dates, expiry & nameservers
- Email Deliverability TestSPF, DKIM & DMARC in one inbox-readiness score
- Email Header AnalyzerRead SPF/DKIM/DMARC & the delivery path
Security & HTTP
- HTTP Header CheckerSecurity headers, redirects & cookies
- SSL / TLS CheckerCertificate validity, expiry & chain
- Redirect CheckerTrace the full redirect chain
- Security ScannerExposed files, mixed content, CORS & trackers
- Subdomain FinderEnumerate subdomains via Certificate Transparency
- Core Web VitalsLCP, INP & CLS from real-user data + Lighthouse
- Speed TestTTFB, DNS/TLS timing, compression & CDN
- Privacy & Cookie ScannerTrackers, cookies & privacy signals