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
eeb1a1b6-04a7-4e42-af9b-b11d3c8f03d5
a1e82bc5-7655-40ca-82b8-6665034ca088
f5b8b17b-cbe1-4d80-972f-2d64ee022663
2fc34d68-c99c-4715-bfaa-563db5ef6363
084acaf6-84a4-478b-b168-144093239e29
Validate UUID

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