UUID Batch Generator
Generates five fresh, independent UUIDs at once — useful when you need several placeholder identifiers in one go rather than one at a time.
What this generator does
Produces many version 4 UUIDs at once, for seeding a table or filling a fixture file where generating them one at a time would be tedious. Each is drawn independently from the browser's cryptographic random number generator, exactly as the single UUID generator does.
How to use this tool
- Press generate for a batch of UUIDs.
Worked examples
- Format
- 3f2504e0-4f89-41d3-9a0c-0305e82c3301
- Version
- Version 4 — 122 random bits, with version and variant bits fixed per RFC 4122
Common use cases
- Populating test data with multiple IDs
- Bulk placeholder database keys
- Quick batch of unique identifiers
Common mistakes
- Using a generated UUID as a security token
- A UUID is an identifier, not a secret — it is often logged, put in URLs and shared. Use the API key or secure token generator for anything that grants access.
Practical tips
- Generate the batch once and paste it into a fixture rather than regenerating per test run, so a failing test is reproducible.
- Version 4 UUIDs carry no timestamp or ordering, so do not rely on them to sort records by creation.
Freshly generated examples — never recorded, looked up, or tied to any real record.
Related generators
- UUID GeneratorAn RFC 4122 v4 UUID for development or testing use — cryptographically random, not sequential.
- Consistent Hashing Ring GeneratorDistributes keys around a hash ring and measures exactly how many move when a node joins, with every move checked to go to the new node.
- Bloom Filter GeneratorFills a Bloom filter and measures its real false-positive rate against the predicted one, with every inserted item proved still present.
- ULID GeneratorA correctly-shaped ULID example, for placeholder database identifiers.
- Nanoid-Style Test ID GeneratorA correctly-shaped, URL-safe 21-character test ID in the nanoid visual style.