Quick Answer
A hash generator runs a one-way function over your text and returns a fixed-length fingerprint. The same input always produces the same hash, but the hash cannot be reversed into the input. This tool offers SHA-256, SHA-384, SHA-512 and SHA-1 via the browser’s built-in Web Crypto API.
What This Tool Does
Paste text, pick an algorithm, and the hash appears instantly. The Web Crypto API (crypto.subtle.digest) is the same implementation browsers use for TLS — it is fast, correct, and needs no downloads or server.
Key Features
- Four algorithms — SHA-256 (default), SHA-384, SHA-512, SHA-1.
- Uppercase option — match hex casing conventions.
- Local and instant — hashing never leaves your device.
- Copy one-click — grab the fingerprint for verification.
How to Use the Hash Generator
- Type or paste text into the input box.
- Pick an algorithm from the dropdown.
- Read the hash on the right — it updates as you type.
- Click Copy to grab it.
Use Cases
- Verifying a downloaded file against a published SHA-256 checksum.
- Generating a content fingerprint to detect accidental changes.
- Teaching how one-way hashing behaves — same input, same output, always.
Tips
- SHA-256 is the safe default. SHA-1 is legacy — avoid it for security-sensitive checks.
- Hashes are not encryption: they are fingerprints. Never store passwords as plain SHA-256 (use a key-derivation function instead).
- To check a file, hash its contents, not just its name.
Privacy
Hashing runs locally with the Web Crypto API — your text never leaves the browser.
Conclusion
Fingerprint anything in one click: paste, hash, copy. Free, fast, and fully private.