UUID Generator
Generate UUID v4 values locally. Supported browsers use crypto.randomUUID. Nothing is sent to NEXNARA.
Privacy-friendly Your data is processed locally in your browser and is not uploaded to our servers.
What is a UUID generator?
A UUID v4 generator creates 128-bit random identifiers in the 8-4-4-4-12 form. They are also called GUIDs. This tool uses the browser’s cryptographic random source, not Math.random.
How to use it
Choose how many UUIDs to create (1, 5, 10, 25, 50, or 100). Leave Hyphens on for the usual dashed form. Turn on Uppercase if you need capital hex digits. Generate UUIDs prints one value per line.
Are they unique?
UUID v4 values are designed so collisions are extremely unlikely for ordinary use. They are random, not sequential, and this page does not check a central registry.
Common uses
Use UUIDs as record ids, test fixtures, or request ids. Do not treat them as secret tokens by themselves.
Privacy
UUIDs are created in your browser. They are not uploaded to NEXNARA servers and are not saved in cookies, local storage, or a database.
FAQ
Are UUID v4 values unique?
They are random 122-bit identifiers. Collisions are extremely rare in normal use, but uniqueness is not guaranteed by a server check.
Can I generate multiple UUIDs?
Yes. Choose 1, 5, 10, 25, 50, or 100, then press Generate UUIDs. Copy All copies every line.
What is a GUID?
GUID is another name for a UUID, commonly used on Windows. This generator produces UUID version 4.
Is generation uploaded?
No. Processing happens locally in your browser and is not uploaded to our servers.