GUID Generator GUID Generator

Generate unique and secure GUIDs / UUIDs quickly in bulk with our free easy-to-use tool with multiple available formating options.

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Guide

What is a GUID/UUID ?

A GUID (Globally Unique IDentifier) is a unique reference number used in software applications to identify resources, objects, or entities across systems, without the risk of duplication.
It is also known as a UUID (Universally Unique IDentifier), although the term GUID is often used in specific contexts, especially in Microsoft technologies.
A GUID is typically a 128-bit value (16 bytes) that is represented as a string of hexadecimal digits, split into five groups.
The primary purpose of a GUID is to generate a globally unique identifier that minimizes the possibility of duplication across different systems, even if they generate GUIDs at different times or locations.
This makes GUIDs ideal for applications like databases, distributed systems, or software development where unique identifiers are required like :

  • Database Keys: Creating unique identifiers for database entries.
  • Distributed Systems: Generating unique IDs for components operating in separate environments.
  • Session Tokens: Assigning non-colliding tokens in web or application sessions.
  • File Naming: Avoiding filename conflicts in shared storage systems.

What is the GUID / UUID Generator ?

Our GUID/UUID generator tool is designed to create Universally Unique Identifiers (UUIDs) compliant with the version 4 specification as defined in RFC 4122.
GUID v4 (also known as UUID v4) is a specific version of the GUID (Globally Unique Identifier) that is based on random or pseudo-random numbers.
The version 4 of the UUID standard is widely used for generating unique identifiers because of its simplicity and high probability of uniqueness.
Here's a detailed description of the tool's features and how it generates these identifiers:

  • Randomness-Driven Generation:
    Version 4 UUIDs are entirely random, with the exception of a few fixed bits that define the version and variant.
    The tool ensures a high degree of randomness using secure random number generation techniques to avoid predictable or non-unique outputs.
  • RFC 4122 Compliance:
    The UUIDs generated follow the required format, ensuring compatibility with all systems that utilize UUID version 4.
  • UUID Structure::
    • A version 4 UUID has 128 bits (16 bytes), represented as 32 hexadecimal characters grouped into five sections separated by hyphens: 8-4-4-4-12.
    • Specific bits are reserved:
      - The 13th hexadecimal character (in the third group) is always 4, indicating the version.
      - The 17th hexadecimal character (in the fourth group) starts with 8, 9, A, or B, marking the variant.
      example : fe47e122-4c94-4cb2-aad9-a77d0b9c75e8
  • Batch Generation:
    The tool allows for generating multiple UUIDs at once, making it ideal for bulk operations.
  • Platform-Independent:
    The tool is accessible on various platforms and does not rely on hardware-specific features, ensuring consistency across different environments.
  • Customizable Output:
    Users can specify additional formatting options, such as removing hyphens or converting to uppercase for specific use cases.
The tool ensures reliable and unique UUID generation suitable for a wide variety of applications while adhering strictly to the version 4 specification.