UUID Generator
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About UUID Generation
UUIDs (Universally Unique Identifiers) are 128-bit identifiers that are designed to be unique across space and time. Our UUID Generator tool allows you to create random UUIDs in various formats including v1, v4, and v5. This is particularly useful for developers who need unique identifiers for databases, distributed systems, or any application requiring unique IDs.
All processing is done entirely in your browser, ensuring your data remains private and secure. No information is uploaded to any server, making this tool both fast and privacy-friendly.
Frequently Asked Questions
What is a UUID and why would I need one?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is designed to be globally unique without central coordination. UUIDs are used in software development for databases, distributed systems, and any scenario where you need to generate identifiers that are guaranteed to be unique across different systems and times.
What UUID versions does this tool support?
Our tool supports generating UUIDs in version 4 (random), version 1 (time-based), and version 5 (namespace). Version 4 is the most commonly used as it generates completely random UUIDs. Version 1 uses the current timestamp and MAC address, while version 5 generates UUIDs based on a namespace and name.
How random and secure are the generated UUIDs?
For version 4 UUIDs, our tool uses cryptographically strong random number generation provided by your browser. This ensures high-quality randomness and makes it extremely unlikely that the same UUID will be generated twice. However, UUIDs are not designed to be used as security tokens or passwords.
Can I generate multiple UUIDs at once?
Yes, the tool allows you to generate multiple UUIDs in a single operation. You can specify the number of UUIDs you want to generate and copy them all at once, which is useful when you need several unique identifiers for batch operations.
In what formats can I get the generated UUIDs?
The tool provides UUIDs in standard format (e.g., 550e8400-e29b-41d4-a716-446655440000), uppercase, lowercase, and without hyphens. You can also get them as a comma-separated list, in SQL INSERT statements, or as an array in various programming languages.