SHA-256 / SHA-512 Generator — Free Online Tool
Compute SHA-256 and SHA-512 cryptographic hashes of any text or binary file using the @noble/hashes library. Both digests are displayed simultaneously for easy comparison. Suitable for checksums, data integrity verification, and HMAC pre-image generation.
100% client-side. No uploads. Your data never leaves your browser.
How to use SHA-256 / SHA-512 Generator
- Type or paste text into the input area, or drop a binary file.
- SHA-256 and SHA-512 digests both appear instantly below.
- Compare the two digests side by side for your use case.
- Copy either digest with the Copy button.
Frequently Asked Questions
Is SHA-256 suitable for password hashing?
No. Raw SHA-256 is too fast, making it vulnerable to brute-force attacks. Use bcrypt, scrypt, or Argon2 for passwords.
What is the difference between SHA-256 and SHA-512?
SHA-512 produces a longer digest (512 bits vs 256 bits) and is theoretically stronger. On 64-bit systems, SHA-512 can be faster than SHA-256.
Which library computes the hash?
@noble/hashes — a well-audited, zero-dependency TypeScript cryptography library by Paul Miller.
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