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SHA-1 through SHA-512, verified correct.
A hash is a one-way fingerprint of some input — the same input always produces the same hash, but the hash can never be reversed back to the original — which makes it useful for exactly the kind of integrity checks and non-reversible comparisons that come up constantly in development work. The Hash Generator computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes using the browser's native, cryptographically verified Web Crypto API — real, standard implementations, not a hand-rolled approximation — entirely client-side. It's a routine tool for developers verifying a file's integrity against a published checksum, generating a deterministic identifier from some input data, or working with any system that expects a specific hash algorithm's output. MD5 is deliberately not offered: it isn't part of the Web Crypto API by design, since it's no longer considered cryptographically secure, and SHA-256 or higher is the right choice for anything where that security property actually matters.
Entering text with SHA-256 selected:
Inputs
Results
Describe the pattern, get the regex.
Compact JSON, made readable.
Know exactly where your JSON breaks.
Text to Base64, UTF-8 safe.
Base64 back to readable text.
Unique identifiers, generated instantly.
Cryptographically random, not Math.random().
Comments and blank lines gone, nothing else touched.
Comments and blank lines gone, styles untouched.