UUID v4
Random RFC 4122. Generated 100% locally with high-entropy cryptographic randomness.
UUID / ULID / NanoID Generator (Offline & Secure)
Free online UUID and ULID generator — create secure UUID v4, time-ordered UUID v7, ULID, and NanoIDs in bulk with JSON and CSV export formats. 100% client-side.
Smart Clipboard Detection Supported
Press Ctrl + V (or ⌘V) anywhere to auto-detect and switch between tools instantly.
How to use UUID Generator
- Select your identifier type: UUID v4, UUID v7 (time-ordered), ULID, or NanoID.
- Choose the quantity to generate (up to 100).
- Configure format options: Lines, JSON Array, or CSV.
- Click 'Copy All' to copy the generated identifiers to your clipboard.
Edge Cases & Important Considerations
- All IDs are generated locally in the browser using the Web Crypto API.
Keyboard Shortcuts
- Ctrl/Cmd + V: Smart Magic Paste — Auto-detects data type (JWT, cURL, JSON, SVG, Timestamp) and switches tools.
- Ctrl/Cmd + K: Open Command Palette to search and jump to any tool instantly.
Frequently Asked Questions
Is this UUID Generator safe for sensitive corporate data?
Yes, 100%. All processing runs client-side in your local browser memory. No text, tokens, payloads, or logs are ever transmitted to any remote server or analytics engine.
Can I use this tool offline?
Yes. Because this tool runs strictly on client-side JavaScript with zero external API dependencies, once loaded it functions completely offline.
100% Client-Side Privacy Guarantee
All inputs are processed entirely inside your browser's memory using JavaScript. No data is ever transmitted to any server. Your tokens, JSON payloads, cURL commands, and timestamps never leave your machine.