Free Online Security & Encoding Tools
A complete suite of password, hash, and encoding utilities. Generate strong passwords, encode/decode text, compute cryptographic hashes, and format JSON — all processed locally in your browser for maximum privacy.
Password Generator
Create strong, random passwords with customizable length and character types.
Password Strength Checker
Test how secure your password is with our strength analysis tool.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to plain text.
URL Encoder/Decoder
Percent-encode or decode URLs and query string parameters.
MD5 Hash Generator
Compute the MD5 hash of any text string instantly.
SHA Hash Calculator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
JSON Formatter
Format, validate, and minify JSON data with ease.
QR Code Generator
Create QR codes for URLs, text, and contact information.
Why Choose CryptoTools Hub?
We believe security and privacy should be accessible to everyone. Our tools are designed with three core principles in mind:
🔒 Privacy First
All processing happens in your browser. We never upload, store, or transmit your data.
⚡ Instant Results
No server round-trips means lightning-fast output, even on slow connections.
🆓 Completely Free
No sign-up, no limits, no hidden fees. Use all tools as much as you need.
📱 Works Everywhere
Responsive design that works perfectly on desktop, tablet, and mobile devices.
Security Notice
While our password generator uses cryptographically secure random number generation, we recommend following best practices: use unique passwords for each account, enable two-factor authentication where available, and consider using a reputable password manager to store your credentials securely.