Crypto & Security

Inspect and transform data with the Web Crypto API and audited primitives. Your keys and plaintext never leave the browser.

4 tools 3 subcategories 100% local

Classical Ciphers Hashing Tokens & Encryption

Classical Ciphers

Learn and experiment with historical ciphers. 1 tools

Classical Cipher Generator Encrypt and decrypt with Caesar, Vigenère, Atbash, and ROT13 ciphers. Open tool

Hashing

Digest text with modern and legacy algorithms. 1 tools

Hash Generator Hash text with MD5, SHA-1, SHA-256, SHA-512, SHA-3, and RIPEMD-160 using bundled implementations. Open tool

Tokens & Encryption

JWT decoding and passphrase encryption. 2 tools

JWT Decoder Decode JWT header, payload, and signature with claim timestamps and expiry warnings. Open tool Text Encryption Encrypt text with AES-256-GCM and a passphrase, or decrypt legacy CryptoJS payloads. Open tool

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