UUID Generator

UUID v4 and v5 Generator

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify data in software systems.
This tool supports:

• UUID v4 – generated using random numbers.
• UUID v5 – generated using a namespace and SHA-1 hashing.

JavaScript Examples:

// Generate UUID v4
crypto.randomUUID();

// UUID v5 generation example requires a library like uuid:
import { v5 as uuidv5 } from 'uuid';
const MY_NAMESPACE = uuidv5.DNS;
console.log(uuidv5('example.com', MY_NAMESPACE));
        

Python Examples:

import uuid

# UUID v4
print(uuid.uuid4())

# UUID v5
namespace = uuid.NAMESPACE_DNS
print(uuid.uuid5(namespace, 'example.com'))
        

Common Uses

• Database record IDs
• Session tokens
• Unique filenames
• API keys