Générateur de hachage
Générez des hachages SHA et MD5.
Type or paste text and generate cryptographic hashes. SHA-1/256/384/512 use the browser's Web Crypto API; MD5 is included as a legacy, non-secure option. Everything runs locally in your browser.
SHA-256 ou plus fort est recommandé. SHA-1 et MD5 ne sont pas sûrs et ne sont fournis que pour compatibilité héritée.
Votre saisie est traitée localement dans votre navigateur — rien n'est envoyé, stocké ni journalisé.
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Comment ça marche
- 1 Type or paste your text.
- 2 Choose the hash algorithms.
- 3 Copy the resulting hashes.
Cas d'usage courants
- Generate a checksum for a string.
- Compare values without storing them.
- Create cache keys or fingerprints.
- Verify data integrity.
Questions fréquentes
Is my input sent to a server?
No. Everything runs locally in your browser — your input is never uploaded, stored or logged.
Which algorithm should I use?
Use SHA-256 or stronger for security. SHA-1 and MD5 are broken for security and are provided only for legacy compatibility.
Are hashes reversible?
No. Hashes are one-way. This tool also does not store anything — it runs entirely in your browser.
Is it really free?
Yes — free, with no signup and no limits.