NanoID Generator
Generate cryptographically secure, URL-safe unique IDs with customizable character sets, variable lengths, and batch output.
Generating 1,000 IDs per second will take ~4,100 years to reach a 1% chance of collision.
Frequently Asked Questions
What is NanoID and why is it preferred over UUID v4?
NanoID is a tiny, secure, URL-friendly unique string ID generator. While UUID v4 is 36 characters long with hyphens, standard NanoID is only 21 characters long while offering equivalent or superior collision resistance and faster generation speeds.
How is NanoID cryptographically secure?
NanoID uses cryptographically strong hardware pseudo-random number generators (such as window.crypto.getRandomValues in browsers or crypto.randomBytes in Node.js) ensuring unpredictable, unguessable token generation.
How long will it take for a NanoID collision to occur?
With the default 21-character length and 64-character alphabet, generating 1,000 IDs every single second would require approximately 4,100 years to reach a 1% probability of a single collision.