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UUID Generator
Developer
Free UUID generator for random UUID v4 identifiers in your browser - toggle hyphens and letter case, then copy one value or the last five for fixtures and record IDs.
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UUID v4
Generates UUID v4 values with hyphen/case toggles and keeps the last five in page memory. No version picker and no bulk count - use Password Generator for secrets.
See moreSee less about the UUID Generator
Examples
Choose an identifier format
Shape: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. Turn off Hyphens for 32 hex characters; toggle UPPERCASE if your fixture style needs it.Version 4 only. UUIDs are identifiers, not passwords - use Password Generator for secrets. History clears on reload.
Build a small fixture set
Generate five times, copy the history list into a test file, then regenerate if you need a fresh set.There is no bulk count slider and no UUID v1/v7 picker on this page.
Key features
- UUID v4 from browser crypto
- Hyphen and case controls
- Five-item history
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Quick answers for UUID Generator
Which UUID version is generated?
Version 4 only, using browser randomness. You can change letter case and remove hyphens.
Does it keep a history?
It keeps the last five generated values in page memory. Reloading clears them.
Can I use a UUID as a password?
Use UUIDs as identifiers. Use Password Generator for passwords and an appropriate token generator for access tokens.
Does generation leave my device?
No. UUID v4 values are created with browser cryptographic randomness and stay in the page until you copy them.