UUID (v4) generator
Create RFC-compliant random UUIDs (version 4) for database keys, file names, test data or tracking identifiers. Set the quantity, choose upper or lower case and hyphen style, then copy the full list with one click. UUIDs come from your device's cryptographic random source and are generated entirely in your browser.
How to use
- Choose how many UUIDs you need (1–100).
- Pick the case and decide on hyphens.
- Press "Generate" for fresh identifiers.
- Click "Copy" to take the whole list.
- Generate again — every batch is unique.
Why use Outilverse?
Cryptographically random v4 UUIDs, never predictable, never transmitted. Format options save you a manual find-and-replace, and bulk copying works for databases and tests alike.
FAQ
What is a UUID v4?
A 128-bit random identifier formatted as 8-4-4-4-12 hex digits. The chance of collision is so small it is treated as impossible.
How random are the UUIDs?
They are generated with the Web Crypto API secure random source — suitable even for security-sensitive uses.
Can I generate UUIDs in bulk?
Yes — up to 100 at once, then copy the entire batch with one click.