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UUID Generator

DeveloperRandomSecurity

Effortlessly generate unique Universal Unique Identifiers with our UUID Generator for your applications, databases, and more.

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INPUT

OUTPUT

Client Side

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Guide

About UUID Generator

The UUID Generator is a web tool from our generators collection designed to create universally unique identifiers (UUIDs) for different versions – 1, 4, 5, or with default settings. A UUID is a 128-bit number used as a unique identifier in software development and database systems. This tool simplifies the process of generating UUIDs for various use cases.

Features

Version Selection: Choose between different versions of UUIDs – 1, 4, and 5, or let the tool select a default version.
Generate Button: Click the generate button to obtain a unique UUID based on the selected version.
Tech Stack: Utilizes the uuid package available on npm for UUID generation.

How to Use UUID Generator

Select Version: Choose the desired UUID version (1, 4, 5, or leave it as default).
Click Generate: Click the “Generate” button to initiate the UUID generation process.
Copy the UUID: Once generated, the unique UUID will be displayed. Copy the UUID for use in your applications or systems.

Tips

Ensure to select the appropriate UUID version based on your specific requirements.
Use the generated UUIDs as unique identifiers in your programming projects or database systems.

Versions of UUIDs

Different versions of UUIDs, their characteristics, and common use cases:

UUID Version	Description	Characteristics	Common Use Cases
UUID Version 1	Time-Based UUID	Generated using the current timestamp and the MAC address of the machine.	Useful for distributed systems where uniqueness is essential.
UUID Version 2	DCE Security UUID	Similar to Version 1 but includes additional fields for POSIX UID/GID.	Primarily used in environments requiring DCE security integration.
UUID Version 3	Name-Based UUID (MD5 Hash)	Generated using an MD5 hash of a namespace identifier and a name (e.g., URL, DNS).	Ideal for generating consistent UUIDs from unique names or identifiers.
UUID Version 4	Randomly Generated UUID	Generated entirely randomly or pseudo-randomly.	Commonly used for general purposes where uniqueness is crucial but not tied to a specific input.
UUID Version 5	Name-Based UUID (SHA-1 Hash)	Similar to Version 3 but uses SHA-1 hashing instead of MD5.	Preferred over Version 3 for cryptographic purposes due to stronger hashing.
UUID Version 6	Field-Compatible Time-Based UUID	Preserves ordering of time-based UUIDs for easier sorting and querying.	Useful in databases and systems requiring sequential ordering of UUIDs.
UUID Version 7	Time-Ordered UUID	Combines timestamp and randomness, ensuring time-ordering while maintaining high entropy.	Useful in systems requiring both chronological ordering and high randomness.
UUID Version 8	Custom UUID	Reserved for custom implementations, allowing users to define their own structure.	Custom applications where standard UUID structures are insufficient.

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 FAQ

What is a UUID?

A UUID, or universally unique identifier, is a 128-bit number used to uniquely identify information in computer systems. It is commonly used in software development, databases, and distributed systems.
How is the UUID Generated?

The UUID Generator tool uses the uuid package from npm to generate UUIDs. This package implements various versions of the UUID specification, including versions 1, 4, and 5.
Can I customize the UUID format?

The UUID Generator currently supports the selection of version 1, 4, 5, or default settings. Custom formatting options are not available within the tool.
Where can I find more information on the 'uuid' package?

For more details about the 'uuid' package, you can visit the official npm page at npmjs.com/package/uuid.
Are UUIDs truly unique?

While UUIDs are designed to be unique, the probability of generating the same UUID in different systems is extremely low due to the randomness involved in the generation process.