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

Encryption

AES File Encryptor/Decryptor

Encrypt and decrypt files locally using AES-256-GCM with PBKDF2 passphrase-based key derivation - Free online AES file encryptor

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

Hash Tools

Hash Calculator

Calculate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums for files up to 2GB or any text string - Free online hash calculator

Inspectors

SSL Certificate Decoder & Inspector

Decode PEM certificates to inspect issuer, subject, validity, SAN entries, and SHA-256 fingerprint locally - Free certificate inspector

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