zacdaddytools
Create secure UUID v4 identifiers locally in your browser.
Generated securely and privately in your browser after you choose an amount.
Nothing is sent anywhere
Custom batches are limited to 1,000 UUIDs.
Choose a quantity to generate UUIDs.
A UUID is a universally unique identifier: a practical, standard-shaped label used to identify records, files, sessions and other objects. GUID is Microsoft’s name for the same family of identifiers, so UUID and GUID are commonly used interchangeably.
This generator creates version 4 UUIDs using your browser’s cryptographic random-number facilities after you press Generate. Correctly generated UUID v4 values have an extraordinarily low collision probability, but they are not a mathematical guarantee of global uniqueness.
A UUID v4 normally uses lowercase hexadecimal characters and hyphens: 550e8400-e29b-41d4-a716-446655440000.
Uppercase and no-hyphen display options change presentation only; they do not create a different UUID version.
UUIDs are useful as database keys, API resource IDs, filenames, test fixtures and distributed-system references. They are not encrypted information and should not automatically be treated as passwords, credentials or secrets. Generated values stay in your browser and are not sent to Zacdaddy Tools.
FAQs
GUID means globally unique identifier. It is commonly used as another name for a UUID.
No. UUID v4 values are random identifiers with an extraordinarily low probability of collision when generated correctly.
No. Generation happens locally in your browser after you choose a quantity.
Not automatically. Do not rely on a UUID alone as a password or credential unless the system that uses it has designed it for that purpose.