UUID Generator
Need to generate v4 uuids? UUID Generator does it in the browser, in a couple of clicks. Parsing, formatting and validation all run in your browser, so API keys, tokens and internal payloads are never transmitted. It is used most by frontend developers checking a token or payload shape. Follows the published specification rather than a loose approximation. Free, unlimited, and free of the upsells most tools of this kind carry.
Key features
- Follows the published specification rather than a loose approximation.
- Reports the line and position of a syntax error instead of failing silently.
- Works on desktop, tablet and phone — no separate app to install.
- Built to do one job properly rather than twenty jobs badly.
How to use UUID Generator
- Paste your input: Drop the payload, code or value into the box above.
- Run it: Press the action button — errors are reported with their position.
- Take the output: Copy the result, or download it when the output is a file.
Frequently asked questions
- What happens with invalid input? — You get the position of the problem rather than a blank failure, so it is usable as a validator.
- Is it safe to paste production data into UUID Generator? — Yes. UUID Generator runs entirely in your browser — no request is made, nothing is logged, and nothing persists after you close the tab.
- Can I use it at work? — Yes, and the local-only processing is usually what makes it acceptable under a company data policy.
- Is there a rate limit? — None. There is no server involved, so nothing to limit.