ShadowReference
ShadowReference
Cryptography

Hash Generator

Free online tool · runs in your browser

One-way cryptographic hashes in the browser.

Do not hash production secrets on shared devices.
…

Quick tutorial

  1. 1Enter text.
  2. 2Select algorithm.
  3. 3Click Generate.

Free online hash generator

Generate SHA-256, SHA-384, or SHA-512 hex digests with the Web Crypto API. Hashing is one-way — you cannot reverse a digest. Use this for checksums and content integrity, not for storing passwords (use bcrypt/argon2). Requires a secure context (HTTPS or localhost). Input never leaves your device.

How to use Hash Generator

  1. Enter text.
  2. Select algorithm.
  3. Click Generate.

Limitations

  • Hashing is one-way — you cannot reverse a hash.
  • Uses Web Crypto — requires secure context.

Example

Input

hello

Output

SHA-256 hex digest

FAQ

Frequently Asked Questions

Can I reverse a SHA-256 hash?

No. Cryptographic hashes are one-way. This tool will not crack or look up hashes.

Should I hash passwords here?

No. Use a password hashing algorithm such as Argon2 or bcrypt with a unique salt in your application.

Is this for passwords?

Use dedicated password hashing (bcrypt/argon2) for passwords.

Is Hash Generator free to use?

Yes. Hash Generator on ShadowReference is free, with no account, no watermarks, and no server-side processing.

Does this tool send my data to a server?

No. All processing happens locally in your browser. Your input never leaves your device.

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