Hash Generator

Generate cryptographic hashes of text.

SHA-1

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SHA-256

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SHA-384

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SHA-512

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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.

UUID v4 Explained: How Random IDs Avoid Collisions

What a UUID guarantees, why version 4 is the common default, how unlikely a collision really is, and when a UUID is the wrong choice for your database.

Why Client-Side Tools Matter: Keep Files on Your Device

Most online file tools upload your data to a server. Here is why many tasks do not need that, and the honest trade-offs of doing it locally.

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.

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