Show HN: A free website security scanner across 10 categories

Category: security

Tags: security-scanner, web-security, vulnerability-scanning

Score: 6.0/10 (Innovation: 5, Technical: 6, Documentation: 4, Utility: 7)

ShieldGraph is a free website security scanner that checks URLs across 10 categories like HTTP headers, TLS, CORS, and DNS health, providing an A-F grade without requiring signup. It combines multiple security checks into a fast, parallel scan with shareable permalinks, addressing gaps in existing tools like SecurityHeaders.com and Mozilla Observatory. The project is useful for quick security audits but limited to unauthenticated checks and basic fingerprinting.

Target audience: web developers, devops, security engineers

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