nid

NanoID Generator

Generate secure, URL-friendly NanoID identifiers with a custom length. Cryptographically random, generated in the browser.

Live·100% in your browser — no upload

    
  




What is NanoID Generator
The NanoID Generator creates NanoID identifiers: short, unique and URL-safe strings, a more compact alternative to UUIDs. Each ID is generated with crypto.getRandomValues, so it is cryptographically random.
IDs are generated in the browser and are not stored or sent anywhere.
How it works
  1. Choose the ID length (21 is the standard).
  2. Set how many IDs to generate.
  3. Press Generate.
  4. Copy a single ID or the whole list.
Frequently Asked Questions
What is the difference between NanoID and UUID?
Both are unique identifiers, but NanoID is shorter and uses a URL-friendly alphabet while staying very collision-resistant; UUID is longer and in a standard format.
Are the IDs really random?
Yes. Each character is drawn with crypto.getRandomValues, the browser's cryptographic random generator.
How long should they be to be safe?
The default 21 characters make collisions negligible for most uses. You can increase it for special needs.


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