Question 1

Which hash algorithms are supported?

Accepted Answer

MD5, SHA-1, SHA-256, SHA-384 and SHA-512 — all computed at once, for both text and files. SHA hashes use your browser's built-in Web Crypto, and MD5 uses a small, well-tested library loaded on demand.

Question 2

Can I hash a file, and is it uploaded?

Accepted Answer

Yes — switch to the File tab and drop any file. It's read and hashed entirely on your device; nothing is ever uploaded. Large files are processed in chunks so the page stays responsive.

Question 3

Should I use MD5 or SHA-1 for security?

Accepted Answer

No. MD5 and SHA-1 are perfect for checksums, integrity checks and spotting duplicate files, but they're considered broken for security uses like password hashing or digital signatures — use SHA-256 or stronger there.

Question 4

What is a hash used for?

Accepted Answer

A hash is a fixed-length fingerprint of some data. It's commonly used to verify a download wasn't corrupted or tampered with: compare the hash you compute against the one the provider published — if they match, the file is intact.

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