Nano ID is a compact, URL-friendly unique string ID, similar in purpose to a UUID but shorter and customizable. The default settings (21 characters from a 64-character alphabet) offer a comparable level of collision resistance to a random UUID.

What alphabet is used by default?

Uppercase and lowercase letters, digits, and the characters _ and -, for 64 possible characters per position, matching the standard Nano ID default alphabet.

Can I use my own alphabet?

Yes. Enter any characters you want to allow, such as just digits for a numeric ID or a smaller custom set. Duplicate characters and whitespace are removed automatically. Keep in mind that fewer unique characters means more possible collisions for the same length, so a small alphabet may need extra length to stay safe.

How many can I generate at once?

Up to 1000 per batch. Set the count and click Generate.

Is my data stored anywhere?

No. IDs are generated on request and are not logged or saved.

DAILYTOOLER

Nano ID generator

Generate compact, URL-friendly, random Nano IDs with a custom length, alphabet, and bulk count.

Length

Count

Custom alphabet (optional)

Alphabet used: _-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz (64 characters)

Generated Nano IDs

What is a Nano ID generator?

Generate one or many Nano IDs at once, with a custom length and, optionally, your own character set instead of the default alphabet. Useful anywhere you need a short, random, URL-safe identifier: database keys, file names, short links, and more.

Nano ID generator

What is a Nano ID generator?

Frequently asked questions