Are these UUIDs secure?

They use crypto.randomUUID(), backed by the browser's cryptographically secure random source.

Can two generated UUIDs collide?

A collision is theoretically possible but extraordinarily unlikely for correctly generated UUID v4 values.

Developer

Create standards-shaped UUID version 4 identifiers using the browser's cryptographically secure random generator.

Local processing. Your data stays in this browser.

Choose a quantity and generate UUIDs.

Input

Generate 1 UUID

Output

f47ac10b-58cc-4372-a567-0e02b2c3d479

Are these UUIDs secure?: They use crypto.randomUUID(), backed by the browser's cryptographically secure random source.
Can two generated UUIDs collide?: A collision is theoretically possible but extraordinarily unlikely for correctly generated UUID v4 values.