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UUID Generator

Generate random v4 UUIDs (GUIDs) instantly. Everything runs in your browser.

Click “Generate” to create a UUID
About UUID v4: Version 4 UUIDs are randomly generated using crypto.randomUUID() or crypto.getRandomValues(). They contain 122 random bits, giving roughly 5.3 × 1036 possible values — the chance of collision is astronomically small. UUIDs are commonly used as database primary keys, session tokens, request IDs, and distributed system identifiers. No data leaves your browser.
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