Cryptographically Secure UUID / GUID Generator (v4)
Generate batches of RFC 4122 v4 Universally Unique Identifiers with custom formatting.
UUID / GUID Generator (RFC 4122 v4)
Generate cryptographically secure Version 4 UUIDs individually or in bulk.
About the UUID / GUID Generator (v4)
Generates cryptographically random UUID v4 identifiers complying with RFC 4122 using browser Web Crypto APIs.
How to Use
Select how many UUIDs to create (1 to 100), configure optional uppercase or hyphen-removal flags, and click Generate.
Understanding Results
With 122 bits of random entropy, the probability of finding a duplicate UUID v4 is so infinitesimally small it can be treated as zero.
Frequently Asked Questions
What is the difference between UUID and GUID?
GUID is Microsoft's implementation of the UUID standard; both represent 128-bit unique identifiers.
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