Text Hash

Good to know

• A hash is taken of bytes, not of letters. The same words encoded as UTF-8 and as Windows-1254 are different bytes and therefore have different digests — which is why the encoding is a choice here rather than an assumption.
• SHA-1 is here because old systems still ask for it. It is broken for anything security-related: use SHA-256 or better for signatures, passwords or integrity you actually depend on.
• MD5 and CRC32 are the last two, and neither comes from the browser: SubtleCrypto refuses MD5 and has never offered CRC32. Use them to spot a damaged download, never to prove anything — producing two files with the same MD5 takes seconds.
• The text never leaves your browser. Hashing is done by the browser's built-in cryptography, with nothing sent to the server.