Free security tools
Inspect certificates and tokens, generate credentials, and validate common web and email security configuration.
Security Tools
SSL/TLS Checker
Check certificate validity, issuer, dates, and TLS configuration for a host.
Password Generator
Generate strong passwords with presets, custom symbols, entropy feedback, history, notes, copy, and download.
Hash Generator
Create SHA hashes, HMAC values, and file checksums with hex/Base64 output and expected hash comparison.
JWT Decoder & Verifier
Decode JWT headers and payloads, inspect claims, and verify supported signatures locally.
Self-hosted SSL Generator
Create self-signed certificates for local and self-hosted testing.
CSR Generator
Generate certificate signing requests and private keys for SSL issuance.
Email Security Checker
Check SPF, DKIM, and DMARC records for email authentication health.
SSH Key Generator
Generate SSH key pairs for secure server authentication.
Security checks for development and operations
Use these tools to inspect or generate a specific security artifact, then verify important production changes with the authoritative service. Treat private keys, passwords, tokens, and production configuration as sensitive data.