NanoID Custom Generator

Custom alphabet and length NanoID

Enter values above and click Generate

About

NanoID supports custom alphabets and lengths. You can specify your own character set and desired length. Custom NanoIDs are useful when you need specific character sets for compatibility, branding, or system requirements. The alphabet determines which characters can appear in the ID, and the length determines how many characters the ID will have. Custom alphabets allow you to create IDs that match specific formats, avoid certain characters, or use only alphanumeric characters for case-insensitive systems.

Use Cases

  • •Case-insensitive systems (lowercase only)
  • •Numeric-only IDs for compatibility
  • •Custom character sets for branding
  • •Avoiding specific characters (e.g., no hyphens)
  • •Legacy system compatibility
  • •Custom length requirements

How to Generate

Library

nanoid

NPM Package

npm install nanoid

Code Example

import { customAlphabet } from 'nanoid';

// Custom alphabet (lowercase + numbers)
const alphabet = '0123456789abcdefghijklmnopqrstuvwxyz';
const customNanoid = customAlphabet(alphabet, 21);
const id = customNanoid();
console.log(id); // e.g., 'k3j9h2f8m1n5p7q4r6s2t0'