Local Cryptography, Hashing & Decoding
Search and filter our suite of 54 offline, client-side tools.
Calculate cryptographic hashes for text or files without server transmission.
Hash passwords and verify text against Bcrypt hashes locally and securely.
Calculate token expiration, remaining TTL lifetime, and inspect time claims in RAM.
Convert RSA/EC PEM public/private keys to RFC 7517 JSON Web Key format client-side.
Visual generator and tester for CORS headers with Express, Next.js & Nginx configs.
Local Cryptography, Hashing & Decoding
Security is paramount when developing software. Our suite of security utilities allows you to inspect JWT authentication structures, calculate cryptographic hashes (like SHA-256, SHA-512, MD5), and generate RSA public/private key pairs completely within your browser's local sandbox.
Unlike online tools that upload credentials to remote systems, we utilize the standard Web Crypto API so that private keys and plaintext passwords never cross the network.
Key Features
- •Secure Hash Generator: Calculate MD5, SHA-1, SHA-256, and SHA-512 values locally.
- •JWT Signature Verification: Safely inspect payload signatures and algorithms.
- •RSA Key Generator: Generate secure key pairs in PEM format right in your browser.
- •No Server Logs: Absolute privacy guarantee—no private keys or data are logged.