UUID Generator
Generate UUIDs (v4) instantly. Generate 1, 5, 10, 50, or 100 UUIDs at once. Copy or download as file.
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How It Works
UUID Generator (v4)
About UUID v4
UUID v4 (Universally Unique Identifier version 4) is generated using random numbers.
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx (36 characters including hyphens)
Version 4 uses cryptographically secure random numbers (122 bits of randomness).
Collision probability: Extremely low. You'd need to generate ~2.71 quintillion UUIDs for a 50% chance of collision.
Standards: RFC 4122 compliant. Uses crypto.randomUUID() (Web Crypto API).
Uses: Database keys, session IDs, transaction IDs, distributed systems, etc.
All generation happens locally in your browser using Web Crypto API.
How to Use
- Select or drag and drop your file(s) into the upload area
- Adjust settings if available (quality, dimensions, etc.)
- Click the process/convert button
- Download the result
Features
- Completely free - no registration required
- Processed locally in your browser - files never uploaded
- Works offline once loaded
- Supports multiple file formats
- Fast processing with no server delays
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Frequently Asked Questions
What version of UUID?
Version 4 (random) UUIDs are generated.
Are they cryptographically secure?
Uses crypto.randomUUID() which is cryptographically secure.