About This Tool
Generate RFC 4122 compliant version-4 Universally Unique Identifiers (UUIDs) using browser Web Crypto APIs.
1 How to Use Step-by-Step
1. Choose how many UUIDs to generate (1 to 50).
2. Select formatting (Uppercase, Hyphens, Braces).
3. Click generate to copy individual IDs or the entire list.
Practical Examples
Generated UUID v4: `3fa85f64-5717-4562-b3fc-2c963f66afa6`
Common Use Cases
• Database primary keys and record IDs
• API session tokens and tracking IDs
• Mock data generation for software testing
Common Pitfalls & Mistakes
• Assuming UUIDs are sequential (v4 UUIDs are completely random)
Frequently Asked Questions
Is this generator cryptographically secure?
Yes, it uses the browser crypto.getRandomValues() Web API for true cryptographic entropy.