Nano ID Generator

What is a Nano ID Generator?

Generate compact, URL-safe Nano IDs in bulk. Customize ID length (default: 21 characters) and custom character alphabets using cryptographically secure random number generators.

Why Use This Tool?

Compact Database Keys: Replace long 36-character UUIDs with compact 21-character Nano IDs that have identical collision safety.
URL-Safe Identifiers: Generate unique IDs safe for inclusion in web URLs without percent-encoding.
Custom Alphabet Sizing: Create numbers-only or uppercase-only Nano IDs.

How to Use

Select ID Length (default: `21` chars).
Select Quantity (e.g. `10`) and custom Alphabet string.
Click Generate and copy Nano ID list.

Real Working Example

Input:

Length: 21 | Quantity: 5 | Alphabet: A-Za-z0-9_-

Output Result:

V1StGXR8_Z5jdHi6B-myT
UakT_G59y-wG12A5W62_u
4fK39_Xz1L5P8k2Q9_wZ7
9a8b7c6d5e4f3g2h1i0jk
_kJ98H76G55F43D21S0a9

Important Technical Details & Specifications

NanoID Algorithm Implementation: Uses `crypto.getRandomValues()` for uniform distribution without character bias.
Default Alphabet: `A-Za-z0-9_-` (64 URL-safe symbols).
Local Memory Execution: Fast local generation.

Related Developer Tools

UUID Generator: Generate 128-bit UUID v4/v7 IDs.
ULID Generator: Generate time-sortable ULIDs.
Token Generator: Generate random tokens.

Frequently Asked Questions

What is a Nano ID?

Nano ID is a tiny, secure, URL-friendly unique string ID generator for JavaScript.

Is Nano ID as secure as UUID v4?

Yes, a 21-character Nano ID built from a 64-symbol alphabet has 126 bits of entropy, matching UUID v4 collision probability.

Is Nano ID URL-safe?

Yes, the default alphabet uses symbols `A-Za-z0-9_-` which are safe for URLs without escaping.

Is it free?

Yes, 100% free.

What is the main function of Nano ID Generator?

Generate compact, URL-safe Nano IDs in bulk with customizable alphabet character sets and length using Web Crypto. This generator produces nano id data instantly in your browser.