Bcrypt is one of the recommended password-hashing functions (with Argon2id and scrypt). The cost factor controls how slow the hash is - higher = more secure but slower to verify. Generate bcrypt hashes for test users, fixture data, and development workflows where you need a real bcrypt hash to seed a database.
When to use this
Use ONLY in dev / test contexts: seeding test users in a dev database, generating fixture data for test cases, verifying your bcrypt library produces the right output. NEVER paste real production passwords - even if processed locally, this is a bad habit.
Frequently Asked Questions
Why does each run produce a different hash for the same password?
Bcrypt is salted - it generates a random 128-bit salt each time. The salt is embedded in the output hash, so verification works even with different hashes for the same password. This prevents rainbow-table attacks.
Is this safe for real passwords?
No - never share real passwords with any online tool, including ours. Even though our tool runs locally in your browser, building the habit of pasting passwords into web forms is dangerous. Use a real bcrypt library in your backend code instead.
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