Generate UUIDs

Generate one or more version 4 UUIDs locally.

Your file stays on your device.This tool processes supported files locally in your browser.

How many

How this tool works

ToolRefinery generates cryptographically random version 4 UUIDs using your browser's Web Crypto API. Nothing is sent to a server.

Paste text directly into the tool. Maximum input length: 1953 KB.

For this version, ToolRefinery processes the text you paste on your device. It is not sent to a ToolRefinery processing server.

Generate a SHA-1/256/384/512 hash of text locally.

Count words, characters, lines and bytes locally.