Hash Generator

Overview

Generate hash values for text or files using SHA-256, SHA-384, SHA-512, and SHA-1 algorithms. Useful for file integrity checks and data comparison. It uses the browser built-in Web Crypto API, and input data is never sent to a server.

Key Features

• SHA-256, SHA-384, SHA-512, SHA-1 hash generation
• Text input and file drag-and-drop support
• Output format selection: hex or base64
• Compare results across multiple algorithms at once
• One-click copy

How to Use

1. Enter text or drag and drop a file.
2. Select a hash algorithm (default: SHA-256).
3. View the generated hash and copy it.

Tips

• SHA-256 is the most widely used hash algorithm today. Use it unless you have a specific reason not to.
• SHA-1 has known collision vulnerabilities and is not recommended for new systems.
• The same input always produces the same hash, so comparing hashes of two files tells you whether their contents match.

FAQ

Can original data be recovered from a hash?

Hash functions are one-way, so original data cannot be reverse-engineered from the hash. This is a fundamental property of hashing.

Is the file sent to a server when hashing?

No. The file is processed locally using the browser Web Crypto API and is never sent externally.

Can I generate MD5 hashes?

MD5 is not available because the Web Crypto API does not support it. MD5 has known collision vulnerabilities, so SHA-family algorithms are recommended instead.