Hash & UUID generator

Hash text, or generate UUID identifiers.

Digest text with Web Crypto, or generate a random UUID v4.

Local · no upload · hashing is not encryption

Hash text

Algorithm

Input text

Hex digest

Generated UUID

Limits & honesty

Algorithms: SHA-1, SHA-256, SHA-384, SHA-512 via SubtleCrypto.digest. MD5 is not offered.
UTF-8 encoding before hashing. Input up to 2,000,000 characters.
UUID uses crypto.randomUUID when available. Hashing is not encryption or password-storage advice.

How do I use it?

Paste text and pick an algorithm, or generate a UUID.

Is anything uploaded?

Everything runs locally in your browser and is not uploaded.

How is this different?

JWT decoding reads tokens; hashing is one-way.