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
1f8d9623-3048-4f9e-a042-6be8cbca0a9d
18040ea2-a0fe-4afb-9507-cf6304d18883
5a11a42c-f6cf-469d-973b-d20cdab003bb
af102ad2-4f7b-421f-bef3-babea598c3f4
95f4b68b-6b08-4e4e-9acb-d4f02365ea7b
Validate UUID

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