What does this tool do?
The NanoID Generator creates short, unique IDs that are safe to use directly in URLs. Generated with the browser's crypto.getRandomValues, it suits developers who need a lightweight alternative to UUIDs for database keys, link shorteners, and more.
How to use it
- Choose the required options or length.
- Generate the secure result.
- Copy and store the result safely.
Why NanoID and how it works
NanoID is a modern ID format that is shorter than a UUID while offering comparable collision resistance. This tool uses a 64-character URL-friendly alphabet (A-Z, a-z, 0-9 plus - and _), so IDs can be dropped straight into addresses, file names, and query parameters without encoding. You can set the length (size) from 2 to 64 and generate from 1 to 50 IDs at once. All randomness comes from the browser's cryptographically secure generator, and no data ever leaves your device.
Frequently asked questions
How safe is the default length of 21 characters?
A 21-character NanoID keeps the chance of a collision practically negligible even across billions of IDs, which is very close to the guarantee provided by UUID v4.
How is NanoID different from a UUID?
NanoID is shorter, uses URL-friendly characters, and has no hyphens. It delivers the same level of uniqueness in a more compact form with fewer characters.
Are the generated IDs truly random?
Yes. It uses the cryptographically secure crypto.getRandomValues instead of Math.random, which makes the IDs hard to predict.
Is NanoID Generator free?
Yes. NanoID Generator and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. NanoID Generator works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.