UWTools Collection
Security Tools
Generate passwords, hashes, encryption data and other security utilities directly in your browser.
Password Generator
Create secure random passwords with length, character-set and entropy controls.
Hash Generator
Create SHA-256, SHA-384 and SHA-512 hashes locally.
UUID v4 Generator
Generate one or many UUID v4 identifiers with browser cryptography.
Random Number Generator
Generate unbiased cryptographically secure integers in a custom range.
Password Strength Checker
Estimate password strength locally with length and pattern checks.
Text Encrypt / Decrypt
Encrypt text locally with AES-GCM and a password.
JWT Decoder
Decode JWT header and payload without verifying its signature.
Password Entropy Calculator
Estimate theoretical password entropy locally.
Browser-first security utilities
These tools use browser cryptography where appropriate and avoid sending passwords, encryption text, UUIDs or hash input to a server.