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UUID generator
Generate a random version 4 UUID.
Generate random version 4 UUIDs with the browser’s crypto.randomUUID function. Enter how many identifiers you need, up to 100 per run. Each UUID is shown on its own line for copying into test data, documents or application fixtures.
How to use
- Set the number of UUIDs to generate, from 1 to 100.
- Run the tool to create random version 4 identifiers.
- Copy or download the newline-separated results.
Worked example
Example input
Number of identifiers: 1
Example result
One possible result: f47ac10b-58cc-4372-a567-0e02b2c3d479 Each run generates a new random identifier.
Limitations and details
A UUID is an identifier, not an access credential or proof of ownership. Random generation makes collisions extremely unlikely but does not replace a database uniqueness constraint. The browser must support crypto.randomUUID in a secure context.
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.