Encryption & Crypto Utilities
Free cryptography tools: hash generator, HMAC signature, AES encrypt/decrypt, RSA key generator, URL encode/decode, and Base64URL converter. By Graph Tools.
- URL Encode / Decode — Encode or decode URL strings with %20 vs + handling, full URI vs component encoding modes, and copy-ready output
- Hash Generator — Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and SHA-3 hashes from any text instantly with copy-ready output
- HMAC Signature Generator — Generate and verify HMAC signatures using SHA-256, SHA-384, and SHA-512 with multiple output encodings
- AES Encrypt / Decrypt Playground — Encrypt or decrypt text with AES-GCM, AES-CBC, and AES-CTR modes with key/IV controls and multiple encoding options
- Hex ⇄ Base64 Converter — Convert hexadecimal byte strings to Base64 and back with grouped hex input, byte-level preview, and validation
- RSA Keypair Generator & PEM Inspector — Generate RSA key pairs in PEM format or inspect pasted PEM keys for type, size, and metadata
- Base64URL Encode / Decode — Encode or decode Base64URL with URL-safe alphabet handling, padding options, and JWT-friendly output