Hash Generator

A cryptographic hash function takes any input and produces a fixed-length digest that uniquely fingerprints the data — even a single changed character produces a completely different hash. This tool generates SHA-1, SHA-256, SHA-384, and SHA-512 digests using the browser's built-in SubtleCrypto API, which means computation is instant and nothing ever leaves your machine. Common use cases include verifying file integrity after a download, generating content-addressable identifiers, creating HMAC signing inputs, and producing checksums for build artifacts.