UUID Generator
Generate UUID v4 (random) and v1 (time-based) identifiers.
Free Web vs Desktop App
Web (Free)
- +UUID Generator with basic functionality
- +No signup or account required
- +Works in any modern browser
- -Generate up to 10 UUIDs at a time
- -Single tool per page, no integrations
Desktop App ($29 one-time)
- Unlimited bulk generation, integrated with database and HTTP client
- All 16 developer utilities in one ToolBox
- Plus terminal, HTTP client, database client, Docker manager
- AI agents, code editor, Git client, and 100+ more features
- macOS, Windows, Linux — one-time purchase, own forever
About UUID Generator
Generate universally unique identifiers in UUID v4 (random) or v1 (time-based) format. Generate multiple UUIDs at once, toggle uppercase/lowercase, and decode UUID metadata including version and variant. Essential for database seeding, testing, and API development.
Frequently Asked Questions
Is UUID Generator free to use?
Yes! This online version is completely free with no signup required. Generate up to 10 UUIDs at a time. For unlimited usage and full integration with 100+ developer tools, download the 1DevTool desktop app ($29 one-time).
Is my data safe?
Absolutely. All processing happens entirely in your browser. Your data never leaves your machine — nothing is sent to any server. The tool runs 100% client-side using JavaScript.
What do I get with the desktop app?
The desktop app includes UUID Generator with no limits, plus 15 other developer utilities. Beyond the ToolBox, you get multi-agent AI terminals, HTTP client, database client (26 engines), Docker manager, Git client, code editor, browser preview, and more — all in one workspace. $29 one-time, no subscription.
Like this tool? There's a lot more.
Download 1DevTool to get UUID Generator with no limits, plus 15 other utilities, AI terminals, HTTP client, database client, and 100+ features.