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UUID 生成ツール

必要な数の UUID をまとめて生成し、テストデータやキー作成にすぐ使えます。

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生成数

生成された UUID

使い方

This tool uses browser-based random UUID v4 generation to create identifiers with a very low collision risk.

UUID v4 values are random-based identifiers.
They are commonly used for test data, object IDs, and temporary development keys.
Security-sensitive tokens may require a stricter system-specific policy.

Are UUIDs guaranteed to be unique forever?expand_more

No absolute guarantee exists, but collisions are extremely unlikely in normal development use.

Can I use UUIDs as database primary keys?expand_more

Yes, although index behavior and ordering tradeoffs should be considered for your system.

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