Do my files upload anywhere?

No. Hashes are computed locally using the browser's Web Crypto API. Nothing leaves your device.

Why is MD5 shown if it's broken for security?

MD5 is still widely used for non-security checksums (verifying downloads, deduplicating files). Don't use it for authentication or passwords.

Yes — drop the downloaded file here, then compare the shown hash to the value published by the source.

Developer Tools

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for text or any file — instantly, in your browser.

Hash a file

Hashes

MD5

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SHA-1

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SHA-256

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SHA-384

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SHA-512

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