UUID / GUID Generator - Create Random IDs
Generate cryptographically secure, universally unique identifiers (UUIDs) instantly. Our Free UUID Generator creates Version 4 UUIDs locally in your browser, perfect for database keys and unique session tokens.
What is a UUID Generator?
A UUID (Universally Unique Identifier), also known as a GUID in the Microsoft ecosystem, is a 128-bit label used to uniquely identify information in computer systems. Version 4 UUIDs are randomly generated and rely on strong random number generators to ensure practically zero chance of a collision. This tool utilizes the `crypto.getRandomValues()` API built into modern browsers to generate highly secure UUIDs instantly. Because the generation happens client-side, the IDs are created securely offline and are never logged by an external server.
Why Use Our UUID Generator?
- Cryptographically Secure: Uses browser-native crypto modules for true randomness.
- Zero Collisions: Generates standard 128-bit Version 4 UUIDs.
- Bulk Generation: Create dozens of unique IDs instantly with one click.
- Absolute Privacy: IDs are generated locally and never tracked by our systems.
How to Use the UUID Generator
Select how many UUIDs you want to generate (e.g., 1 or 50).
Click the 'Generate UUIDs' button.
The tool will instantly output the list of unique identifiers.
Use the copy button to instantly copy them to your clipboard.
Frequently Asked Questions
This tool generates Version 4 UUIDs, which are created using completely random (or pseudo-random) numbers.
Yes. The probability of generating a duplicate v4 UUID is so astronomically small that it is practically zero.
Yes. We use the browser's native Web Crypto API rather than basic Math.random(), ensuring cryptographically secure randomness without any server-side logging.
All file processing is performed locally in your web browser. We do not upload, store, or view your data.