UUID 產生器 — 免費線上工具

什麼是 UUID 產生器？

免費線上 UUID v4 產生器。使用 crypto.randomUUID() 建立通用唯一識別碼。批次產生最多 50 個 UUID。

為什麼要使用 UUID 產生器？

Generates RFC 4122 v4 compliant UUIDs
批次產生：一次 1、5、10 或 50 個
Toggle hyphens and uppercase/lowercase
Uses crypto.randomUUID() for secure randomness

如何使用 UUID 產生器 — 逐步教學

Choose how many UUIDs to generate (1, 5, 10, or 50).

Toggle hyphens on/off and case (lower/upper).

Click Generate for a fresh batch.

Click copy next to any UUID to copy it.

UUID 產生器適合誰？

資料庫鍵值
工作階段 ID
分散式系統
測試資料

UUID 產生器 — 常見問題

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier represented as a 36-character string (32 hex digits + 4 hyphens). Version 4 UUIDs use random numbers, making collisions extremely unlikely.

Are these UUIDs safe for production use?

Yes. The tool uses the browser's built-in crypto.randomUUID() API, which provides cryptographically secure random UUIDs suitable for production use as database keys and identifiers.