UUID generator
Generates cryptographically secure UUID v4 and v7 values locally in your browser.
1 · Options
Generated with crypto.getRandomValues (not Math.random) - nothing is sent to a server.
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What this generates
UUID v4 (fully random) and UUID v7 (time-ordered, sortable by generation time), plus the all-zero nil UUID as a reference value - with quantity, case and hyphen options, and copy/download.
Cryptographically secure by construction
Every random byte comes from crypto.getRandomValues, the browser's cryptographically secure random source - never Math.random, which is not designed to be unpredictable enough for identifiers used in security-sensitive contexts.
Privacy
Generated entirely in your browser - nothing is sent to a server.
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