UUID Generator
API近日公開Generate RFC 4122 v4 UUIDs in bulk using the browser crypto API. No server, no duplicates.
UUID Generator
- 0a16e17b-7f6b-4fe8-86f7-205eae7da629
- 2732c803-80a8-43f0-b31c-4e50179cc608
- 5773ee3a-a0d9-43a9-943f-c204f5f3bbfc
- 31d665db-d735-4d93-b075-cce9d2ef49a4
- 1901869f-7228-4f29-8ded-62b26e15bcb8
- 1700230b-f508-4bc2-81f4-b4697e971f51
- 85d5ea6d-ae9a-4ad5-888c-c92086f79d19
- ea2161b3-08df-47b3-972a-8bfc2720a3d0
API バージョンが近日公開
UUID Generator の API が利用可能になったときにお知らせします。
概要
A UUID (Universally Unique Identifier) is a 128-bit label that's practically guaranteed to be unique across systems without coordination. UUID v4 — the kind this tool generates — is built from 122 random bits plus 6 fixed bits, giving 5.3 × 10^36 possible values. Collisions are astronomically unlikely unless your random source is broken.
This tool uses the browser's built-in crypto.randomUUID() API when available and falls back to a CSPRNG-based implementation otherwise. The randomness is cryptographically strong — far better than Math.random() — so the IDs are safe for security tokens, session IDs, and primary keys.
Generate one UUID or a thousand in a single click. Each result is shown with a one-click copy button and the full hex/UUID form is preserved. No server, no analytics, no log.