Nano ID Generator
Generate short, URL-safe random IDs like Nano ID. Choose the length and alphabet, and see how much randomness each ID has.
Free · No upload · 100% on your device
How to use Nano ID Generator
- Choose the settings in the side panel.
- The result updates instantly. Select “Generate again” for a fresh one.
- Copy the result or download it.
Private by design. Everything you type, open or record is processed in this browser tab and is never uploaded to KittySuite.
About Nano ID Generator
The default, 21 characters from a 64-symbol alphabet, gives 126 bits of randomness, comparable to a UUID. The “no look-alikes” alphabet drops characters such as 0, O, 1 and l that are easy to misread.
Values come from the browser’s cryptographic random generator (crypto.getRandomValues) on this device. Nothing is sent or stored, so no one else ever sees them.
Nano ID Generator: frequently asked questions
How do I generate a Nano ID?
Choose the length and alphabet and how many IDs you need, then copy them.
How random is a 21-character ID?
With the default 64-symbol alphabet it has 126 bits of randomness, comparable to a UUID. The tool shows the strength for your settings.
Can I avoid confusing characters?
Yes. Choose “No look-alikes”, which drops characters such as 0, O, 1 and l.
Can I use my own alphabet?
Yes. Choose Custom and type the characters to use.