UUID Generator
Generate unique identifiers (UUID v4).
Qu'est-ce qu'un UUID ?
Un UUID (Universally Unique Identifier) est un identifiant de 128 bits standardisé. La version 4 (v4) est générée aléatoirement et offre une probabilité de collision infinitésimale, ce qui la rend idéale pour générer des clés primaires dans les bases de données ou des identifiants de session.
📖 How to use this UUID generator?
Generate universally unique identifiers in one click:
- Choose the quantity of UUIDs to generate (1 to 100)
- Click 'Regenerate' to create new UUIDs
- Use the 'Copy' button to copy all UUIDs
📚 UUID Version Types
UUID v4 ✓ Utilisé ici
Randomly generated, most common. No time or machine dependency.
UUID v1
Based on timestamp and MAC address. Chronologically sortable.
UUID v5
Derived from namespace and name via SHA-1. Deterministic and reproducible.
UUID v7 Nouveau
Recent version combining Unix timestamp and randomness. Sortable and database-performant.
❓ Frequently Asked Questions
What's the collision risk?
Almost zero! You'd need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of collision.
UUID or GUID, what's the difference?
None! GUID (Globally Unique Identifier) is Microsoft's term for UUID. They're the same identifiers.
Can I use these UUIDs in production?
Yes! They're generated with crypto.randomUUID(), the browser's secure cryptographic API.
🎯 Use Cases
- 🔑 Primary keys in distributed databases
- 🔗 API identifiers and session tokens
- 📦 Naming uploaded files or resources
- 🔒 Transaction identifiers and logs
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