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UUID Generator
Generate v4 random or v7 time-ordered UUIDs in bulk, and inspect existing ones.
Options
Inspect a UUID
0 UUIDs
v4: 122 bits of randomness from crypto.randomUUID()
Which version should I use?
- v4 is fully random — the safe default for opaque identifiers.
- v7 embeds a millisecond timestamp, so IDs sort by creation time. Great for database primary keys because inserts stay index-friendly.