Most audit tools cover one area: Ahrefs covers SEO, SSL Labs covers TLS, and Mozilla Observatory covers headers. Canopy Guard covers all of them in about 30 seconds, then cross-references the results to find gaps that only show up when two areas are read together.
| Feature | Canopy Guard Free | Ahrefs / SEMrush $99 to $499/mo | Google Search Console Free | Mozilla Observatory Free | SSL Labs Free | HubSpot Grader Free |
|---|---|---|---|---|---|---|
| Visibility | ||||||
SEO Analysis | ✓ | ✓ | ◐ | ✕ | ✕ | ◐ |
AEO: Answer Engine OptimizationOnly us How AI tools like ChatGPT cite your content | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
GEO: Generative Engine OptimizationOnly us How AI models chunk and retrieve your pages | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
llms.txt DetectionOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
| Security: Headers | ||||||
Security Header Presence | ✓ | ✕ | ✕ | ✓ | ◐ | ◐ |
CSP Directive Quality Scoring Scores what the directives say as well as whether the header is present | ✓ | ✕ | ✕ | ◐ | ✕ | ✕ |
CORS Misconfiguration DetectionOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Dangerous HTTP MethodsOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
| Security: TLS | ||||||
Certificate Expiry Countdown Days remaining as well as valid or invalid | ✓ | ✕ | ✕ | ✓ | ✓ | ✕ |
Cipher Suite Quality Detects RC4, 3DES, EXPORT, NULL ciphers | ✓ | ✕ | ✕ | ◐ | ✓ | ✕ |
TLS Version Enforcement Flags TLS 1.0 / 1.1 acceptance | ✓ | ✕ | ✕ | ✓ | ✓ | ✕ |
Self-Signed Certificate Check | ✓ | ✕ | ✕ | ✕ | ✓ | ✕ |
| Security: DNS | ||||||
SPF Policy Quality ScoringOnly us Grades -all, ~all and +all differently | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
DMARC Policy Level reject vs quarantine vs none | ✓ | ✕ | ✕ | ✓ | ✕ | ✕ |
CAA Record Detection | ✓ | ✕ | ✕ | ✕ | ✓ | ✕ |
Subdomain Takeover DetectionOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
| Security: HTML & Paths | ||||||
HTML Source Security ParsingOnly us CSRF tokens, mixed content, inline scripts, comment disclosures | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Vulnerable Library DetectionOnly us Fingerprints CDN URLs against known CVE versions | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Sensitive File ExposureOnly us .env, .git/config, backups, source maps | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Error Page Stack Trace CheckOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
| Intelligence & Platform | ||||||
Cross-Reference IntelligenceOnly us Findings that only exist in the overlap of multiple layers | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Free, No Account Required | ✓ | ✕ | ◐ | ✓ | ✓ | ◐ |
CISSP-Reviewed MethodologyOnly us | ✓ | ✕ | ✕ | ✕ | ✕ | ✕ |
Competitor data based on publicly documented feature sets, June 2026.
One URL and 105 signals, with no account required.
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