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UUID Generator
Generate random UUIDs (v4) or time-ordered UUIDs (v7), one or many at a time.
Generated with the browser’s crypto API — nothing is sent to a server.
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UUID Generator — frequently asked questions
v4 or v7?+
v4 is fully random. v7 embeds a timestamp so the IDs sort chronologically — better as database keys.
Are these guaranteed unique?+
v4 has ~5.3×10^36 possibilities, so collisions are effectively impossible in practice.
你们会把我的文件上传到服务器吗？+
不会——这里的每个工具都完全在你的设备上处理文件，不会向服务器上传任何内容。唯一的例外是 AI 工具，它们会把提取的文本（而非文件本身）发送给 Claude 来完成工作。
有文件大小限制吗？+
我们没有人为设置限制，但由于处理过程在你的浏览器中进行，非常大的文件（超过 500MB 或 1000 页）会受到你设备内存的限制，而非我们的限制。
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