Security & Privacy Tools
Free browser-based security tools. Everything runs locally — nothing is ever sent to a server.
Passphrase Generator
API Key Generator
Hash Generator
Encryption Key Generator
JWT Token Generator
Decoded Header
Decoded Payload
SSL Certificate Generator
Frequently Asked Questions
Are these tools safe to use?
Yes. All tools run entirely in your browser using JavaScript. No data is ever transmitted to any server. The code uses standard Web Crypto APIs and well-tested algorithms.
Is anything sent to a server?
No. Everything runs 100% locally in your browser. Your passphrases, keys, hashes, and tokens never leave your device. You can even use these tools offline after the page loads.
Can I use these for production apps?
The passphrase, API key, hash, encryption key, and JWT generators produce cryptographically strong output suitable for production use. However, the SSL certificate generator creates self-signed certificates only suitable for development and testing — not trusted by browsers in production.
What's the difference between a hash and encryption?
A hash is a one-way function — you can turn data into a hash but you cannot reverse it back to the original data. Encryption is a two-way function — you can encrypt data and then decrypt it back using a key. Use hashing for storing passwords and verifying data integrity. Use encryption when you need to recover the original data later.