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
df46a26e-b11a-404e-9b57-af09dd38fb62
2b06b5a3-8873-4926-b9bb-541f0bf9f0a0
7d65c11e-ae44-44ac-b157-a984638013f9
9d7182a9-6bab-4200-a2e3-d0419e58e74d
f8f27a9b-49f1-4ea2-b4fa-a5a687692694
Validate UUID

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