UUID Generator (v4)

IPOK dev tools provide fast network diagnostics and data conversions, including IP purity, subnet risk, DNSBL blacklist, and ASN routing lookups.

UUIDs are widely used as database primary keys, request IDs, idempotency keys, filenames — anywhere you need a globally unique value. This tool uses the browser-native crypto.randomUUID to bulk-generate RFC 4122 v4 random UUIDs, with adjustable count, uppercase and no-hyphens, and one-click copy per item or all.

Everything is cryptographic-grade random and generated locally in your browser, never uploaded. v4 UUIDs are made of random bits with negligible collision probability, fitting almost any need for a unique identifier.

Count5UppercaseNo hyphens

Generated with the browser-native crypto.randomUUID — RFC 4122 v4 random UUIDs, cryptographic randomness, local, never uploaded. Common as primary keys, request IDs, idempotency keys.

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FAQ

Are these UUIDs truly random? Will they collide?

Generated from a cryptographic random source (crypto.randomUUID), the collision probability is negligible in practice.

What's the difference between v4 and v1?

v1 is based on timestamp + MAC (which can leak generation time / machine info); v4 is purely random and leaks nothing — the most common version today. This tool generates v4.

Are the generated UUIDs uploaded?

No, everything is generated locally in your browser.