Hash Generator

What It Does

Produces deterministic hashes from text input using MD5, SHA-1, SHA-256, SHA-384, or SHA-512, and compares output against an expected hash when provided.

Why It Matters

Hashes are core for integrity verification in CI/CD artifacts, API signatures, and environment consistency checks.

How To Use

• Paste exact input content (including line breaks).
• Select required algorithm from your target system.
• Optional: provide expected hash to instantly verify match/mismatch.

Which Algorithm Should You Pick?

SHA-256 is the safe default, which is why it's preselected. MD5 and SHA-1 are both broken for security purposes — collisions can be manufactured — so treat them as checksums for spotting accidental corruption, not as proof nobody tampered with anything. They're still in the list because plenty of legacy systems, package registries, and old APIs hand you an MD5 or SHA-1 to compare against, and you can't verify what you can't reproduce. SHA-384 and SHA-512 are there for systems that demand longer digests.

Real-World Uses

The verify field is the underrated part. Paste the SHA-256 from a release page into "Expected hash", paste the payload, and the status flips to Match or Mismatch — no squinting at 64 hex characters trying to eyeball a difference. The same trick works for checking whether a config file is byte-identical across two environments: hash both, compare the digests. It's also handy when you're debugging an integration that signs or fingerprints payloads and you need to confirm what hash your exact input should produce.

Frequently Asked Questions

Does my text leave the browser?

No. SHA hashes come from the Web Crypto API built into your browser, and MD5 runs from a bundled library. Nothing is sent to a server, so you can hash sensitive payloads without a second thought.

Why doesn't my hash match the expected one?

Almost always whitespace. A trailing newline, a tab-versus-spaces difference, or Windows line endings (CRLF vs LF) produce a completely different digest. Hashes are exact — one byte off and the output shares nothing with the original.

Can I hash a file with this?

Not directly — this tool takes text input. For small text files, paste the contents. For binaries, use sha256sum or shasum -a 256 on the command line.

Is a hash the same as encryption?

No. Encryption is reversible with a key; a hash is a one-way fingerprint. You can't recover the input from the digest, which is exactly what makes it useful for integrity checks.