UUID Generator – I7 Pixel

// Dev Tools

UUID Generator

Generate RFC-compliant UUIDs v1, v4, and v5 in bulk. Choose your version, set a quantity, and copy or download instantly.

✓ Free · No Upload RFC 4122 Compliant v1 · v4 · v5 · Bulk Export 100% Client-Side

⟨/⟩ UUID Gen

💡All UUIDs are generated in your browser using the Web Crypto API — nothing is sent to any server.

Version:

Namespace UUID

Name (input string)

UUIDs to generate

✅ Generated —

Count

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Version

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Format

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Standard

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ℹ️ About

UUID Versions

v1 · Time-based
Uses current timestamp + random node. Each UUID encodes when it was created. Monotonically increasing within the same millisecond.

v4 · Random
122 bits of cryptographic randomness via crypto.getRandomValues(). The most common version for general use.

v5 · Name-based
Deterministic SHA-1 hash of a namespace UUID + name string. Same input always produces the same UUID.

Structure

              xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
            

M = version digit · N = variant bits (8, 9, a, or b)

Standard

Fully compliant with RFC 4122. 128-bit identifiers represented as 32 hexadecimal digits in the form 8-4-4-4-12.