NanoID Generator
Generate a random, URL-friendly NanoID and copy it instantly — free, private, and processed entirely in your browser.
About the NanoID Generator
NanoID is a modern alternative to UUID — shorter (21 characters by default versus UUID's 36), URL-safe by design, and just as collision-resistant for practical purposes. It's become a common choice for IDs in URLs, database keys, and session tokens.
Every NanoID is generated using the same cryptographically secure random number generator as our UUID and ULID generators. Choose your length and character alphabet if you need something other than the default.
How to Generate a NanoID
Step 1
Set your length
Use the default 21 characters, or choose a custom length.
Step 2
Generate instantly
A new secure NanoID is generated the moment you adjust any option.
Step 3
Copy and use it
Copy your NanoID to the clipboard.
Frequently Asked Questions
How is a NanoID different from a UUID?
Shorter (21 characters by default, versus UUID's 36) and URL-safe by default — a better fit for URLs and compact identifiers, while remaining just as collision-resistant for practical purposes.
Is a NanoID as secure and random as a UUID?
Yes — both use cryptographically secure randomness; NanoID's shorter length is offset by a larger character alphabet.
Can I customize the length or characters used?
Yes — adjust length or use a custom alphabet.
Is my generated NanoID sent anywhere?
No. Generation happens entirely in your browser.