UUID Generator
Generate universally unique identifiers (UUIDs / GUIDs) version 4.
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Overview
The UUID Generator creates Version 4 UUIDs (Universally Unique Identifiers), also known as GUIDs (Globally Unique Identifiers). These are 128-bit numbers used to uniquely identify information in computer systems without requiring a central coordinating authority. Version 4 UUIDs are generated using random or pseudo-random numbers.
Use Cases
Assigning unique primary keys to database records.
Generating unique transaction IDs or session identifiers.
Creating unique IDs for objects or resources in distributed systems.
Labeling assets or entities where uniqueness is critical.
Any scenario requiring a globally unique identifier with an extremely low probability of collision.
How It Works
When you click the "Generate UUID" button, the tool utilizes the crypto.randomUUID() method provided by modern web browsers. This method generates a cryptographically strong random Version 4 UUID, conforming to RFC 4122. The generated UUID is then displayed in the output field.
Tips for Better Usage
Version 4 UUIDs are the most common type and are suitable for most general-purpose unique ID needs.
The probability of collision for v4 UUIDs is astronomically low, making them practically unique.
UUIDs are typically represented as a 32-character hexadecimal string, often with hyphens:
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.