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🔑 UUID Generator
Generate universally unique identifiers (UUID).Generated UUIDs
Count
UUID Type
UUID v4 (Random)
Output Format
Raw Text
Usage Guide
Configure Parameters
Set the number of UUIDs and select the version type
Choose Format
Select the output format for your UUIDs
UUID v4 (Random)UUID v1 (Time-based)Raw TextJSON Array
Generate and Copy
Generate UUIDs and copy them to clipboard
Features
🔒Cryptographically Secure: Uses browser's crypto API for secure random generation
📏Multiple Versions: Support for UUID v1 (time-based) and v4 (random)
⚡Batch Generation: Generate up to 100 UUIDs at once
📋Multiple Formats: Output as raw text or JSON array
Technical Introduction
What is UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique across time and space. It's widely used in distributed systems, databases, and applications to generate unique identifiers without coordination.
UUID v1: Time-based with MAC address
UUID v4: Random with cryptographic security
Standard Format: 8-4-4-4-12 hexadecimal digits
Security Best Practices
Best practices for using UUIDs in secure applications
Use UUID v4 for maximum randomness and security
Never expose UUIDs in URLs or logs without encryption
Validate UUID format before processing in applications
Important Notes
• All UUIDs are generated locally using browser's crypto API• UUIDs are guaranteed to be unique across time and space• Use UUID v4 for most applications requiring unique identifiers