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Hash Generator (SHA256, MD5, SHA512)

Verifying file integrity or generating secure password representations requires reliable hashing algorithms. This 100% client-side hash generator computes SHA-256, SHA-512, MD5, and SHA-1 hashes entirely in your browser using the native Web Crypto API and a built-in MD5 algorithm for legacy checksum needs. Unlike other online tools, your sensitive strings never leave your machine. Each algorithm produces a fixed-length hex digest: MD5 outputs 128-bit (32 hex characters), SHA-1 outputs 160-bit (40 hex), SHA-256 outputs 256-bit (64 hex), and SHA-512 outputs 512-bit (128 hex). The calculation processes both text input (via TextEncoder to binary buffer) and file uploads (via ArrayBuffer) with identical results. Ideal for developers creating checksums, security auditors verifying downloads, or engineers debugging authentication flows. You can add secret salts to test different hashing strategies for password storage.

How to Generate a Hash Online

  1. Type or paste your text into the input field
  2. Select an algorithm (SHA-256 is recommended for security)
  3. Add an optional salt if you are testing password storage
  4. Copy the resulting hash from the output table

Choosing the Right Hash Algorithm

MD5 is for integrity, not security: While fast, MD5 is vulnerable to collision attacks and should never be used for password storage. Use it only for simple file checksums.

SHA-256 is the modern standard: Part of the SHA-2 family, SHA-256 offers a great balance of speed and security. It is used in everything from SSL certificates to Bitcoin.

Client-side hashing improves privacy: By using the browser's crypto engine, you ensure that your 'plain text' strings are never sent over the network, protecting your data from interception.