UUID Generator
Generate v4 UUIDs individually or in bulk.
A UUID (universally unique identifier) is a 128-bit value used to identify records, sessions and files without a central authority.
About UUID Generator
Generate cryptographically random version 4 UUIDs one at a time or in bulk batches for seeding databases, naming test fixtures, or creating unique identifiers in code. Every UUID is generated locally using the browser's crypto API, so nothing is logged or transmitted, making it safe for identifiers tied to sensitive systems.
A UUID (universally unique identifier) is a 128-bit value used to identify records, sessions and files without a central authority. This UUID generator creates random version 4 UUIDs using your browser's cryptographic random source, one at a time or in bulk, ready to paste into a database seed, test fixture or configuration.
How to use UUID Generator
- Choose how many UUIDs you need.
- Click Generate to create a fresh batch.
- Toggle formatting options such as uppercase if required.
- Copy the list into your code, spreadsheet or database.
Key features
- Cryptographically secure random v4 UUIDs.
- Bulk generation for seeding data.
- Instant copy of the whole list.
- No requests to a server, so IDs are never logged.
Common use cases
- Creating primary keys for test data or migrations.
- Generating unique filenames or correlation IDs.
- Producing identifiers for mock API responses.