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UUID / GUID Generator

Generate cryptographically secure v4 UUIDs in bulk with hyphen and uppercase formatting options.

UUID / GUID Generator Workspace

This tool runs directly in your browser using local CPU execution. Enter your input below to process.

关于 UUID / GUID Generator

Create universally unique identifiers (UUIDs) conforming to RFC 4122 v4 standards.

如何使用 UUID / GUID Generator

  1. 1Select the quantity of UUIDs to generate.
  2. 2Toggle formatting (hyphens, uppercase, braces).
  3. 3Click generate and copy the list.

适用场景与时机

  • •Database primary keys.
  • •Mocking API IDs and session tokens.
  • •Distributed system identifiers.

预期输出与结果说明

Unique, cryptographically random v4 UUID strings.
隐私承诺：100% 本地运行（零服务器存储）

UUIDs are created via window.crypto.getRandomValues on your device.

常见问题解答 (FAQ)

Can UUIDs collide?

The probability of a collision in UUID v4 is negligible (approx 1 in 2.71 quintillion).

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