What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit alphanumeric code used to uniquely identify information in distributed systems, databases, APIs, and modern applications.

What is the UUID Generator?

HelppDev's UUID Generator is a free online tool that instantly creates unique identifiers following the UUIDv4 standard. It's ideal for developers, analysts, and IT professionals who need to avoid data collisions and ensure uniqueness in projects.

What is the UUID Generator for?

Use the generator to: Create unique keys in databases; Generate tokens for APIs and authentication; Identify objects, files, or records in distributed systems; Ensure uniqueness in integrations and microservices.

📌 Main UUID Versions

• UUIDv1: Based on timestamp and device MAC address.
• UUIDv3: Based on MD5 hash of a namespace and name.
• UUIDv4: Based on random numbers (version used in this generator).
• UUIDv5: Similar to UUIDv3, but uses SHA-1 instead of MD5.

🛠 How does UUIDv4 work?

UUIDv4 is generated from random numbers, making repetition virtually impossible. It's ideal for applications that require unique identifiers without relying on a centralized server.

🔹 UUIDv4 Example

Example: 550e8400-e29b-41d4-a716-446655440000

🔹 How to generate UUID in Laravel

In Laravel, use the Str class to easily generate UUIDs:

use Illuminate\Support\Str;\n$uuid = Str::uuid();

🎯 Main uses of UUID

UUIDs are useful for:

• Unique identifiers in databases.
• API key generation.
• Distributed systems that need to avoid ID collisions.

💡 Tips and Best Practices

• Prefer UUIDv4 for uniqueness without hardware dependency.
• Avoid exposing sensitive UUIDs in public URLs.
• Validate the UUID format when receiving external data.

Security: all UUID processing is done locally in your browser. No data is sent to our servers.

If you need unique, secure, and practical identifiers for your projects, HelppDev's UUID Generator is the ideal choice.