Free Online UUID Generator
Values come from the browser's cryptographic random source, so they are suitable for keys, sessions and test data.
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How to use UUID Generator
- Set how many UUIDs you want.
- Pick the format.
- Copy the list or download it.
Questions about UUID Generator
Are these really unique?
Version 4 uses 122 random bits; collisions are astronomically unlikely unless you generate billions.
What is version 7?
A time-ordered UUID that keeps inserts sequential in a database index, useful for large tables.
About UUID Generator
Generate random UUID v4 identifiers in bulk with our free online UUID Generator. 100% browser-based, fast, and private—no login or file uploads required.
These text and code tools clean and transform strings: count words, convert case, deduplicate lines, encode or decode Base64 and URLs, escape entities, hash, format JSON and compare two versions.
This tool runs in your browser. The file is not uploaded. Everything runs on the text you paste, so you can safely process snippets of code or logs; nothing is sent anywhere, and clearing the box removes it from memory.