Are these UUIDs truly random?

Yes. They use crypto.randomUUID() which provides cryptographically secure random values.

UUID v4 is a 128-bit identifier generated from random numbers. The format is 8-4-4-4-12 hex characters with version 4 indicated by the first digit of the third group.

Are these UUIDs truly random?

Yes. They use crypto.randomUUID() which provides cryptographically secure random values.

UUID v4 is a 128-bit identifier generated from random numbers. The format is 8-4-4-4-12 hex characters with version 4 indicated by the first digit of the third group.

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UUIDジェネレーター

ランダムなUUID v4文字列を生成。一度に最大100個まで一括生成。

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数量：

bfc154ac-d806-41fb-b8f5-cda26a1f87e1

148aa1b6-16c9-419a-b571-5e1738c989d9

abc7bf88-ff40-4855-9987-4243929a6a03

d141313a-4e08-4d67-a89d-0d1d7383f4f7

757e9617-d602-40e0-b638-e634956a5f3e

UUIDを検証

UUID Generatorについて

Generate cryptographically random UUID v4 strings. Bulk generate up to 100 at once, copy individually or all at once, and validate existing UUIDs. Uses the browser's built-in crypto API.

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input. All four algorithms run simultaneously so you can compare outputs. Processing happens entirely in your browser using the Web Crypto API.

JWT Decoder

Decode and inspect JWT tokens in your browser.

JSON Formatter & Validator

Format, minify, and validate JSON online.

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