GUID V4 - Random-Based Identifier (Recommended)
GUID v4 is the most widely used random-based identifier. Learn about its structure, collision probability, advantages and why it is recommended for general-purpose applications.
How to Generate UUIDs in Node.js
Generate UUIDs in Node.js with crypto.randomUUID() for v4 and the uuid package for v7 when you need sortable identifiers.
Recommendation: use the built-in API for UUID v4 and add a package only when you need UUID v7 or a consistent cross-runtime interface.
How to generate UUID v4 in Node.js
import { randomUUID } from 'node:crypto';
const id = randomUUID();
console.log(id);How to generate UUID v7 in Node.js
// npm install uuid
import { v7 as uuidv7 } from 'uuid';
const id = uuidv7();
console.log(id);Native support notes
- Node.js uses UUID naming consistently across community packages.
- UUID v4 is native with the crypto module.
- UUID v7 is still usually package-based.
Practical notes
- Prefer
node:cryptofor v4 when you want zero dependency overhead. - Keep one package version across workers, APIs, and CLI tools when using UUID v7.
- See UUID v7 for ordering and database trade-offs.
Frequently Asked Questions
Yes, it is the cleanest choice for UUID v4 in modern Node.js applications.
In most Node.js projects, UUID v7 still comes from a package such as
uuid.Learn more
These articles expand on related concepts, formats and practical considerations.