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Generate random version 4 UUIDs in your browser, one or up to 100 at a time, and copy them all with one click.
Uses crypto.randomUUID, with a crypto.getRandomValues fallback, both from your browser's secure generator.
Generate from 1 to 100 UUIDs at a time, one per line, ready to paste.
Copy the whole list in one click, or regenerate a fresh batch of the same size.
UUIDs are created on your device and are not saved or uploaded.
When you use UUID Generator, your data never leaves your browser. All transformations execute in-memory on your local machine with zero server uploads. Web assets are downloaded to run the tool, but your input data is never transmitted.
No. They are generated in your browser with its secure random number generator. Nothing is uploaded or stored.
Version 4: 122 random bits with the version and variant fields set as RFC 4122 requires.
In practice no. With 122 random bits, the chance of a collision is negligible for any realistic number of UUIDs.
It keeps the page responsive and the list easy to copy. Generate another batch if you need more.
Generate SHA-256, SHA-384, or SHA-512 hashes of text in your browser using the Web Crypto API.
Prettify, format, validate, and minify JSON data with instant local parsing and syntax error diagnostics.
Generate strong random passwords with your browser's secure random number generator. Choose length and character types, with nothing stored or sent.
Generated with your browser's secure random number generator (crypto.randomUUID). Nothing is stored or sent anywhere. Processed locally in your browser.