Générateur UUID — Outil en ligne gratuit
Génère des UUID v4 — cryptographiquement aléatoires
Génère des UUID / GUID v4 avec le crypto API du navigateur. Aléatoires, uniques, sécurisés. Gratuit, instantané, dans ton navigateur.
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Free UUID v4 generator — cryptographically random
Outilolis UUID Generator produces RFC 4122 compliant UUID v4 identifiers using the browser\'s native crypto.randomUUID(). Generate 1 to 1000 UUIDs at once. Choose lowercase, uppercase, hyphen-less, or brace-wrapped formats.
How to use this tool
- 1
Set quantity
Choose how many UUIDs you need — from 1 to 1000 at once.
- 2
Pick format
Standard hyphenated (<code>123e4567-e89b-12d3-a456-426614174000</code>), uppercase, or without hyphens.
- 3
Generate & copy
Click Generate, then Copy to get all UUIDs on your clipboard, one per line.
Use cases
- Database primary keys — better than auto-increment for distributed systems
- File upload names — avoid collisions
- Session tokens / CSRF tokens — 122 bits of entropy is sufficient
- API request IDs — trace requests across microservices
- Event IDs — uniquely identify messages in queues
- Anonymous user tracking — GDPR-friendly when not tied to personal data
Frequently Asked Questions
What is a UUID?
Which UUID version does this generate?
crypto.randomUUID() which is cryptographically secure and draws from 122 bits of entropy (2122 possible values).Are these UUIDs truly unique?
What's the difference between UUID and GUID?
Can I use these for security tokens?
Are these UUIDs stored?
À retenir
- UUID Generator is a free, browser-based developer tool — generate v4 uuids — cryptographically random.
- Non signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use UUID Generator
- Open the tool: Launch UUID Generator on Outilolis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
UUID Generator — Quick Facts
- Prix
- Gratuit — sans limites, sans filigrane, sans paywall
- Confidentialité
- 100% dans le navigateur — aucune donnée n’est envoyée à un serveur
- Plateforme
- Tout navigateur moderne — desktop, tablette ou mobile
- Catégorie
- Développeur Outils on Outilolis
- Hors ligne
- Works offline after first visit (Progressive Web App)
| Caractéristique | Détails |
|---|---|
| Outil | UUID Generator |
| Catégorie | Développeur |
| Inscription requise | Non |
| Téléversement de fichier | Aucun — traité dans le navigateur |
| Compatible mobile | Entièrement adaptatif |
| Coût | Gratuit pour toujours |
Why Use UUID Generator?
You should try UUID Generator for a quick, private way to generate v4 uuids — cryptographically random. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.