Hash Generator
Generate cryptographic hashes from text or files using the browser's native Web Crypto API. Nothing leaves your device.
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Drop file here or click to select
Any file type — processed locally
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Frequently Asked Questions
A hash function takes any input and produces a fixed-size string (the hash or digest). The same input always produces the same hash. Even a tiny change in the input produces a completely different hash. Hashes are one-way — you cannot recover the original input from the hash.
SHA-256 is the recommended choice for most uses — it's the current standard for file integrity verification and digital signatures. SHA-512 offers a larger output (512 bits) and can be faster on 64-bit CPUs. SHA-1 is legacy and should not be used for security-sensitive applications.
Download providers often publish the SHA-256 hash of a file. Drop the downloaded file into the File tab, generate its SHA-256 hash, and compare it to the published value. If they match, the file is intact and unmodified.
Yes. This tool uses the browser's built-in Web Crypto API (window.crypto.subtle). No data is sent to any server. Everything is computed locally in your browser.