Digest computation utility

Hash generator

Cryptographic hash functions take any input and produce a fixed-length fingerprint that is practically impossible to reverse.

Compute SHA hashes

Hashing is done locally with Web Crypto when available.

Why this tool works well

  • Supports SHA-256 and SHA-1 digest output.
  • Copy-ready hash output for developer workflows.
  • No transmission of input text to remote servers.
  • Verify file integrity by hashing the content and comparing against a published checksum. If the hashes match, the file has not been tampered with or corrupted during transfer.
  • When testing APIs that use HMAC signatures, hash the expected payload to confirm your signing logic produces the correct output before sending authenticated requests.

Use cases

Integrity checks

Verify text fingerprints quickly during testing.

Config comparison

Compare hash values between payload variants.

Debug tooling

Generate deterministic digests for local scripts.

Practical examples

SHA-256

Input: hello

Output: 2cf24dba5fb0...

SHA-1

Input: hello

Output: aaf4c61ddcc5...

Suggested workflow

FAQ

Is SHA-1 still secure?

SHA-1 is legacy and should not be used for new security-critical workflows.

Why is compute disabled in some contexts?

Web Crypto requires modern browser support and secure contexts.

Can I use SHA-256 output directly as a password hash?

Not without a salt and a slow hashing algorithm like bcrypt or Argon2. SHA-256 is fast by design, which makes it vulnerable to brute-force attacks on passwords. Use it for data integrity, not password storage.

Is MD5 available in this tool?

This tool provides SHA-1 and SHA-256. MD5 is cryptographically broken and not recommended for any security use. For checksums where speed matters and security does not, MD5 libraries are available in most languages.

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