Why Nano ID
Nano ID trades UUID's fixed 36-character, hyphenated format for a shorter, URL-safe string with a size and alphabet you choose — useful for compact public identifiers.
Nano ID Generator
Generate compact, URL-safe Nano IDs with a configurable size and alphabet directly in your browser. Nothing is uploaded.
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0 IDs
Generated and inspected locally. Nothing is uploaded.Nano ID
Collision resistance depends on size and alphabet
A larger size or alphabet increases the ID space; the default 21 characters over a 64-character alphabet has a comparable collision probability to a v4 UUID at realistic volumes.
Frequently asked questions
Nano ID carries no embedded timestamp or metadata — like UUID v4, it is pure randomness.