UUID GeneratorUUID 生成器

Generate random UUID v4 identifiers.

一键生成多个随机 UUID v4，用于主键、追踪 ID 与测试数据。

What is UUID Generator?UUID 生成器 是什么？

A UUID generator creates random version-4 identifiers — the 36-character strings with hexadecimal groups separated by hyphens that databases, APIs and distributed systems use as primary keys. It uses the browser cryptographic random source, so identifiers are unpredictable. You can generate one or a whole batch and copy them instantly.

UUID 生成器创建随机的 version-4 标识符——即由连字符分隔的 36 位十六进制字符串，数据库、接口和分布式系统常用它作主键。它使用浏览器加密随机源，标识符不可预测，可生成单个或批量并一键复制。

How to use uuid generator如何使用 UUID 生成器

1. Choose how many UUIDs you need, from a single one up to a large batch.
2. Optionally switch to uppercase or remove the hyphens for a compact form.
3. Read the generated identifiers, each 36 characters in the standard 8-4-4-4-12 layout.
4. Copy one or copy them all as a list for pasting into code or a spreadsheet.

1. 选择需要数量，从 1 个到大批量。
2. 可切换大写或去连字符的紧凑形式。
3. 读取结果，每个 36 字符，标准 8-4-4-4-12 结构。
4. 复制单个，或整列复制后粘进代码或表格。

Common uses常见用途

• Create primary keys for a database table or a NoSQL document
• Generate request IDs, correlation IDs or idempotency keys for an API
• Produce test fixtures and seed data for automated tests
• Create unique resource names for cloud infrastructure and container workloads

• 为数据库表或 NoSQL 文档创建主键
• 生成接口的请求 ID、关联 ID、幂等键
• 为自动化测试生成夹具与种子数据
• 为云基础设施和容器负载创建唯一资源名

FAQ常见问题