Developer ToolsGeneratorsFree Tool
NanoID Generator
Generate a cryptographically random, URL-friendly ID using the same 21-character length and default alphabet as the popular nanoid library.
How to Use NanoID Generator
- 1Click Process to generate a new Nano ID
- 2Copy the result
- 3Click Process again for another one
Frequently Asked Questions
Yes in shape — 21 characters from the same URL-friendly alphabet (A-Za-z0-9_-) the nanoid npm package uses by default, generated with cryptographically random bytes (crypto.getRandomValues), matching nanoid's real security properties.
That's nanoid's own default length, chosen to give a collision probability comparable to UUID v4 while producing a shorter string.
Yes — with cryptographically random generation and 21 characters from a 64-character alphabet, the collision probability is extremely low, on par with UUID v4.
No — generation happens entirely in your browser.
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