A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are designed to be unique across time and space without requiring a central registration authority.
Our UUID generator supports Version 1 (time-based), Version 4 (random), Version 7 (time-ordered), Nil UUID, and GUID. Each version has different characteristics and use cases.
Version 4 (random) is the most commonly used and recommended for most applications. Use Version 1 if you need time-based ordering, Version 7 for better time-ordered UUIDs with improved privacy, or Nil UUID for representing uninitialized values.
Yes! Our UUID generator uses cryptographically secure random number generators (for Version 4) and proper timestamp-based algorithms (for Version 1 and 7) to ensure uniqueness. The probability of generating duplicate UUIDs is astronomically low.
Yes! Use the bulk generation feature to generate up to 10,000 UUIDs at once. You can then download them as a text file for easy use in your projects.
Absolutely! All UUID generation happens locally in your browser. We do not store, transmit, or have access to any UUIDs you generate. Your privacy is completely protected.
Yes! Once the page is loaded, UUID Generator works completely offline. All generation happens locally in your browser using JavaScript, so you don't need an internet connection to generate UUIDs.
UUID and GUID are essentially the same thing. GUID (Globally Unique Identifier) is the Microsoft Windows term for UUID. Both refer to the same 128-bit identifier format. Our generator produces RFC 4122 compliant UUIDs.