Password Generator & Strength Checker

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Strong Password Generator — Free, Cryptographically Random

Quick guide

SHA-256 Hash Explained: What It Is and When to Use It

What a SHA-256 hash is, why one changed letter changes everything, how it differs from encryption, and how to generate SHA hashes free in your browser.

Strong Passwords vs Passphrases: Which Should You Use?

Random passwords or multi-word passphrases? Learn how entropy works, how long is long enough, and the limits of our own generator and strength meter.

AES-256 Text Encryption Explained in Plain English

How AES-256-GCM and PBKDF2 turn a passphrase and a message into safe ciphertext in your browser, and what that protects against.

How to Password Protect a PDF (and Remove It Later)

Add or remove a PDF password in your browser, and learn what encryption protects, what it does not, and how to choose a strong password.