🆔 UUID Generator
Instantly generate cryptographically secure random v4 UUIDs — completely free and runs entirely in your browser with no upload, no login, and no server involved.
Set options and click Generate.
About
This tool uses the browser's built-in crypto.randomUUID() API to produce RFC 4122-compliant version 4 UUIDs, so every identifier is statistically unique and cryptographically unpredictable. You can generate 1 to 100 UUIDs at a time, toggle uppercase or hyphen formatting, copy individually or in bulk, and download them as a plain-text file. Because everything runs client-side, your generated IDs never leave your device — no tracking, no logs, no server.
How to use
- Set the Count field to how many UUIDs you need (1–100).
- Choose formatting options: enable Uppercase and/or disable Hyphens as needed.
- Click Generate — UUIDs appear instantly without any network request.
- Click the clipboard icon next to any UUID to copy it individually, or use Copy All to grab every UUID at once.
- Click Download to save all generated UUIDs as a uuids.txt file.
FAQ
- Is this UUID generator free?
- Yes, completely free with no account, subscription, or hidden fee required.
- Do you upload or store the UUIDs I generate?
- No. The tool runs entirely in your browser using the native crypto.randomUUID() API. No data is sent to any server — your UUIDs stay on your device.
- Does it work offline?
- Yes. After the page loads once, UUID generation works fully offline because everything is client-side JavaScript with no external requests.
- What UUID version does this tool generate?
- It generates version 4 (v4) UUIDs, which are randomly generated and RFC 4122-compliant. v4 is the most widely used version for unique identifiers in software development.
- Can I generate multiple UUIDs at once?
- Yes. You can generate between 1 and 100 UUIDs in a single click, then copy all or download them as a text file.