Security
15 toolsGenerate cryptographically strong passwords, test password strength against common patterns, and compute MD5, SHA-1, SHA-256, and other hashes from any input. Everything runs client-side so sensitive data never leaves your machine.
JWT Signature Verifier
Verify HS256, HS384, and HS512 JWT signatures locally with a shared secret.
Certificate Chain Viewer
Paste a PEM certificate chain, count certificate blocks, and create local SHA-256 fingerprint previews.
Password Generator
Generate strong, random passwords with custom rules
Password Strength Checker
Check how strong your password is and get improvement tips
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
Hash Checker
Compare and verify file or text hashes
Random Token Generator
Generate cryptographically secure random tokens and secrets
SSH Key Generator
Generate ECDSA or RSA key pairs in your browser using the Web Crypto API — never sent to any server
JWT Generator
Build and sign JWT tokens with a chosen algorithm and secret
bcrypt Hash Generator
Generate and verify bcrypt password hashes in the browser
TOTP Code Generator
Generate time-based one-time passwords like Google Authenticator
RSA Key Generator
Generate RSA public and private key pairs in your browser
CSP Builder
Visual Content Security Policy header generator — toggle directives and sources, copy the ready-to-use header
Certificate Decoder
Paste a PEM certificate and decode its fields — subject, issuer, validity dates, SANs, and key usage
Password Strength Checker
Check password entropy and strength in real time — crack time estimates, pattern detection, improvement tips