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Free Tool
Generate cryptographically random UUID v4 identifiers, one or in bulk. Uses your browser secure random generator.
UUID v4 values are 128-bit random identifiers, formatted as 8-4-4-4-12 hex digits. Collision chance is effectively zero.
UUIDs make excellent primary keys and public record IDs because they are unique without a central counter.
These are generated with crypto.getRandomValues, the browser cryptographically secure random source. Not Math.random.
Generation happens locally. No server ever sees or logs the identifiers you create.
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