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.
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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Frequently Asked Questions (FAQ)
What is a Nano ID?
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 36-character 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 works directly in links.
How do I generate IDs with this tool?
Choose the ID length from 4 to 128 characters — the classic default is 21 — and how many IDs you need, up to 100 at once. Then pick an alphabet preset or type a custom alphabet, and press Generate IDs.
Are the generated IDs private?
Yes. The IDs are generated in your browser with the crypto secure random source, nothing is sent to any server. Uniqueness is statistical: a longer length and larger alphabet make collisions far less likely.