Hash Generator
Free online tool · runs in your browser
One-way cryptographic hashes in the browser.
Quick tutorial
- 1Enter text.
- 2Select algorithm.
- 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.
Documentation last reviewed .
One-way digests only
SHA-256, SHA-384, and SHA-512 digests are one-way. This tool will not reverse or “crack” hashes. Use digests for checksums and integrity checks. Do not hash passwords here — use Argon2 or bcrypt with salts inside your application.
How to use Hash Generator
- Enter text.
- Select algorithm.
- 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.
Related guides
Deeper reading on private, browser-based workflows for hash generator and related tools.
- Base64 Encoding Is Not Encryption — Clear explanation of Base64 vs encryption, when to encode or decode, and how to use a private Base64 tool for UTF-8 text.