Are the generated UUIDs truly unique and cryptographically secure?
Yes. They are generated using the browser's native Web Crypto API (crypto.randomUUID), which sources entropy from your operating system's cryptographic random number generator.
Generators
Generate secure UUIDs in bulk.
Add an input and run this tool to see the output.
Run AIOptional, bring your own key.
Add your own AI provider in AI settings to enable AI help for this tool. Nothing is sent until a key is configured.
UUID Generator Developer Guide
100% Client-Side & PrivateCreate identifiers for tests, fixtures, database records, and API examples without repeating manual UUID formatting.
Key capabilities
- Generates RFC 4122 compliant version 4 (UUID v4) identifiers
- Cryptographically secure randomness powered by the Web Crypto API (`crypto.randomUUID`)
- Bulk generation with customizable count (1 to 100 UUIDs in one click)
- Optional uppercase, lowercase, and hyphens removal formatting
Common use cases
- Creating unique primary keys for database seeds, test fixtures, and mock datasets
- Generating correlation IDs and idempotency keys for distributed microservice requests
- Creating non-colliding file names or resource identifiers in frontend state
How to use UUID Generator
- Specify the number of UUIDs you want to generate using the count input
- Click Generate or adjust formatting options (case, hyphens)
- Copy individual UUIDs or copy the full list to your clipboard
Frequently asked questions
Does DevHub save or log the generated UUIDs?
Never. Identifiers are generated directly in-memory and are not stored in any database or transmitted anywhere.