🆔 UUID Generator

1. Choose how many UUIDs to generate (1, 10, or 100) and which version.
2. Click Generate — UUIDs appear in the output box.
3. Use the format toggles for uppercase, brace-wrapping ({...}), or hyphen-stripped output.
4. Generation uses crypto.randomUUID() when available, falling back to crypto.getRandomValues() with the v4 bit pattern applied.

v4 vs v1: v4 is purely random (122 bits of entropy, collision probability essentially zero). v1 embeds a timestamp + clock-seq + node ID, making UUIDs roughly time-ordered — useful for database indexes that benefit from temporal locality. The Nil UUID (00000000-0000-0000-0000-000000000000) is a placeholder value.