UUID Generator
Generate cryptographically secure UUID v4 unique identifiers individually or in bulk instantly in your browser.
UUIDs are generated 100% locally using Web Crypto API in your browser memory.
UUID v4 Generator
Quantity:
Advertisement
How the UUID Generator works
Universally Unique Identifiers (UUID v4) are 128-bit numbers composed of 32 hexadecimal digits displayed in 5 groups separated by hyphens (8-4-4-4-12).
Why use UUID v4?
- Distributed Database Keys: Generate unique primary keys across multiple client nodes without database collisions.
- Session & API Tokens: Create unpredictable transaction tokens and session IDs.
- Resource Identifiers: Assign immutable IDs to uploaded files, jobs, or microservice requests.
Frequently Asked Questions
Are generated UUIDs cryptographically random and safe to use? +
Yes. ShadTools uses standard Web Crypto API (crypto.randomUUID) for cryptographically strong pseudorandom generation.
How many UUIDs can I generate at once? +
You can generate up to 50 UUIDs in a single batch and copy all values with one click.
Can I remove hyphens or format UUIDs as uppercase? +
Yes. Use the format toggles in the top bar to switch between uppercase/lowercase and enable or disable hyphens.