UUID & NanoID Generator
Generate UUID v4, UUID v7 and NanoID in bulk
How it works
Pick an ID type — UUID v4 (random), UUID v7 (time-ordered, sortable), or NanoID (short, URL-safe) — set how many you need, and they're generated using the browser's cryptographic random source. Toggle uppercase or hyphens, adjust NanoID length, and copy individual IDs or the whole list.
Frequently asked
What is UUID v7?
A newer UUID format whose first bits encode a millisecond timestamp, making the IDs sortable by creation time while staying globally unique — useful as database keys.
Are the IDs cryptographically random?
Yes. They use crypto.getRandomValues / crypto.randomUUID, the browser's secure random source.
What is NanoID?
A compact, URL-safe unique ID (21 characters by default) — shorter than a UUID with a similar collision resistance.