UUID Generator
Input
Choose how many UUID v4 values to generate. Results are created locally in your browser.
Random UUID version 4 (RFC 9562 / RFC 4122), lowercase with hyphens.
Output
Generated in your browser with the uuid package.
All processing happens in your browser — your files are never uploaded to a server.
About this Tool
The uuid-generator tool on AllThatConverter generates robust lists of random UUID v4 standard variables for development and seeding operations. Because the formatting completes 100% locally inside your browser buffer sandbox, it prevents telemetry leaks, letting you format secret configurations with absolute trust.
100% Secure Local Processing Active
This tool runs entirely on your device via WebAssembly and browser Canvas. No files are ever sent to any remote server, ensuring complete data security.
How to Use
Set the desired quantity of UUIDs to generate using the slider or input buttons.
Random v4 UUID values are instantly produced and listed on your screen based on your criteria.
Click the copy-all button or download the list directly as a text file.
Core Scenarios & Use Cases
Database PK Seed Generation
Generates robust lists of random UUID v4 standard variables to seed primary key rows in testing tables.
Session Tokens & User Identifiers
Provisions highly random v4 UUID identifiers to map unique sessions, API cookies, or secure logs.
Mock Value Generation for Testing
Generates multiple high-entropy variables instantly to mock token inputs in local developer configurations.
Frequently Asked Questions
Yes. The tool queries the browser's native cryptographic API (crypto.getRandomValues) to assure maximum randomness and avoid collision risks.
No artificial server caps exist. Thanks to localized JavaScript computation, you can fetch thousands of UUIDs instantly with zero delay.