UUID generator

Cryptographically random UUIDs via Web Crypto API. Nothing leaves your browser.

What works / what does not
✓ UUID v4 (random)✓ UUID v7 (time-ordered)✓ Batch up to 100 IDs✓ Uppercase and dashless format✓ Validate and detect version✗ UUID v1 (MAC-based)✗ ULID (separate tool later)✗ UUID v3/v5 with namespace
Version
Format
Generated
ac7ac0d5-f358-4a15-8fcd-7dc7a9f5a27b
29507e00-93fd-4cd8-9f6e-067d9c755d8d
1693c6bb-1780-4937-83f0-6a92025ae668
deb495c6-56d5-405b-8e3f-56774df8977b
f106ea06-cd88-47cd-9e43-13b0f3880c59
Validate UUID

v7 is sortable by creation time — useful for database primary keys.