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SmaftyTools

Hash Generator

Generate SHA-256, SHA-384, SHA-512 and SHA-1 hashes from text using the Web Crypto API. Fast, free and fully client-side.

SHA-1 is provided for legacy checksums only — don't use it for security.

SHA-256 hash

Output will appear here

About Hash Generator

The Hash Generator computes SHA-256, SHA-384, SHA-512 and SHA-1 hashes from any text, right in your browser using the native Web Crypto API. A hash is a fixed-length fingerprint of data: the same input always produces the same hash, while even a one-character change produces a completely different result.

Developers use hashes to verify file and message integrity, generate cache keys, deduplicate content and compare values without storing the originals. SHA-256 is the modern default; SHA-1 is included for compatibility with legacy systems but should not be used for security purposes.

Hashes are computed locally and instantly — your input text is never uploaded.

How to Use the Hash Generator

  1. Type or paste your text into the input box.
  2. Pick a hash algorithm (SHA-256 is recommended).
  3. The hexadecimal hash appears instantly.
  4. Click Copy to use the hash in your project.

Features

  • SHA-256, SHA-384, SHA-512 and SHA-1 support
  • Native Web Crypto API — fast and standards-compliant
  • Instant hashing as you type
  • Lowercase hex output with one-click copy

Frequently Asked Questions

What is a hash used for?

Hashes verify data integrity (checksums), create fixed-size identifiers for content, and let systems compare data without storing the original. Password systems store salted hashes instead of plain passwords.

Can a hash be reversed to get the original text?

No. Hash functions are one-way by design. The only way to 'reverse' one is to guess inputs and compare hashes, which is infeasible for strong algorithms and non-trivial inputs.

Should I use SHA-1 or MD5?

Not for anything security-related — both have known collision attacks. Use SHA-256 or stronger. SHA-1 is offered here only for legacy compatibility checks.

Is the Hash Generator free?

Yes, the Hash Generator is completely free with no usage limits. No signup, no account and no installation required.

Is my data safe?

Yes. All processing happens locally in your browser using JavaScript — nothing you type is uploaded or stored on our servers.

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