UUID Generator

Generieren standard UUID v4 identifiers instantly. Erstellen single or bulk UUIDs in multiple formats. Validieren UUID format. 100% client-seitig, secure random generation.

Quantity

Einzeln Bulk

Ausgabe Formatieren

UUID Validator

Über UUID Generator

Universally Unique Identifiers (UUIDs) are 128-bit numbers used to identify information in computer systems. UUID v4 is randomly generated using cryptographically secure random numbers, making collision probability practically zero. This tool generates RFC 4122 compliant UUIDs entirely in Ihrem Durchsuchenr — keine Daten is sent to any server.

Funktionen

Rein client-seitig — UUIDs verlassen Sie nie Ihr device
Cryptographically secure random generation via Web Crypto API
Einzeln or bulk generation (up to 100 at once)
Mehrfach output formats: standard, compact, uppercase, URN
Built-in UUID format validator
One-click copy for individual or all results

Häufig gestellte Fragen

Was is a UUID?

UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. The most common version is v4, which is randomly generated.

Are these UUIDs truly unique?

UUID v4 has 2^122 possible combinations, making the probability of collision astronomically low (about 1 in 2.71 quintillion). For practical purposes, they are unique enough for virtually all applications.

Is the generation secure?

Yes. We use the browser's built-in crypto.getRandomValues() API, which provides cryptographically secure random numbers suitable for security-sensitive applications like session tokens and API keys.

Was are the different formats?

Standard format includes hyphens (xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx). Compact removes hyphens. Uppercase converts to capital letters. URN adds the urn:uuid: prefix as defined in RFC 4122.