Create unique identifiers in-browser for development, testing, mocks, APIs, and database records.
UUID with versions v1, v3, v4, v5, v6, and v7.
You can generate UUID v1, v3, v4, v5, v6, and v7, plus NanoID, ULID, KSUID, CUID2, and Mongo-style ObjectId.
This gives flexibility for API design, database keys, event streams, and reproducible deterministic identifiers.
Use UUID v7 for modern time-ordered UUIDs, v3/v5 for deterministic namespace-based IDs, and ULID/KSUID for sortable token-like identifiers.
Batch generation saves time when preparing fixtures, seeds, and mock API responses.
ID generation runs locally in your browser using secure random APIs.
Very short IDs or tiny alphabets can increase collision risk in high volume environments.
UUID v1-v7, NanoID, ULID, KSUID, CUID2, and ObjectId.
Yes. Set quantity and generate in batches.
Yes. You can define your own alphabet.
Yes. Processing happens in-browser.
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Tools on this page run directly in your browser and do not send entered content to a backend. This improves privacy and reduces latency.
