Crypto & Security Tools
Generate RSA/ECDSA key pairs, encrypt files with AES, calculate hashes, and perform cryptographic operations locally in your browser. Zero server uploads, complete privacy.
Crypto & Security
10 tools in 6 subcategories
Key Generators
RSA/ECDSA Key Generator
Generate cryptographically secure RSA and ECDSA public/private key pairs using the Web Crypto API - Free online key generator
Cryptographically Secure Password Generator
Generate high-entropy passwords with browser cryptographic randomness and policy controls - Free secure password generator
UUID / GUID Batch Generator
Generate batches of up to 10,000 cryptographically secure UUID v4 (random) or UUID v7 (time-ordered) identifiers in your browser - Free online UUID generator
Token Tools
JWT Debugger & Signature Verifier
Decode JWT claims and verify HS/RS/ES signatures in-browser with shared-secret and public-key workflows - Free online JWT debugger
TOTP/2FA Authenticator & Token Generator
Generate RFC6238 TOTP codes from Base32 secrets or otpauth URIs with algorithm and period controls - Free online TOTP generator
Utilities
QR Code Encoder & Decoder
Generate custom QR codes from text or URLs and decode QR images locally in your browser with private client-side processing - Free online QR tool
Base64/Hex File Encoder & Decoder
Convert binary files to Base64 or Hex strings and decode text back into downloadable files locally in your browser - Free online Base64/Hex file converter