A Nano ID is a short, URL-friendly unique identifier. It is like a UUID but much shorter, for example V1StGXR8_Z5jdHi6B-myT2 instead of a long 36-character UUID string.

What is a Nano ID used for?

Developers use Nano IDs as database primary keys, short link slugs, session tokens and file names — anywhere a short unique random string is needed.

How is this different from a UUID?

A UUID is always 36 characters with dashes. A Nano ID can be any length you choose and uses a URL-safe alphabet with no dashes, so it is shorter and works directly inside URLs.

Is the generation private and free?

Yes. The IDs are generated in your browser with your device secure random source, nothing is sent to any server, and it is free with no signup.

Nano ID Generator

Generate short, URL-friendly unique IDs like the ones modern apps use for database keys and short links. Pick a length and alphabet, generate up to 100 IDs at once, and copy them with one click — everything runs privately in your browser.

ID length (4-128)

How many (1-100)

Alphabet

Press "Generate IDs" to create your unique IDs.

How to use

Choose the ID length (the classic Nano ID default is 21 characters) and how many IDs you need.
Pick an alphabet preset, or choose "Custom alphabet" and type your own characters.
Press "Generate IDs". Use the copy button on any row, or "Copy all" to copy the full list at once.
Numbers-only mode is handy for OTP-style codes; URL-safe mode is best for database keys and short links.

Note: IDs are generated with the browser crypto random source, so they are unpredictable and safe to use as unique tokens. Uniqueness is statistical — a longer length and a larger alphabet make collisions far less likely.

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