Can I use a custom alphabet?

Yes. Use at least two unique characters. Larger alphabets provide more entropy per character.

Are Nano IDs good database IDs?

They can be, especially for distributed apps, but choose length and alphabet based on collision tolerance and indexing needs.

Nano ID Generator Online - URL-Safe Random IDs

LengthCountAlphabet presetCustom alphabet

Nano IDs are compact random IDs. Collision risk depends on length, alphabet size, and how many IDs you generate.

Choose length, alphabet and count, then generate local Nano IDs.

Privacy: Runs locally in your browser. Your input is not uploaded to ToolsFam servers.

About NanoID Generator

Nano IDs are compact random identifiers that work well for frontend fixtures, local records, slugs, optimistic UI objects, test data, and temporary references. They are shorter than UUIDs while still offering strong randomness when the alphabet and length are chosen well.

This generator lets you choose length, count, and alphabet. URL-safe IDs are useful for routes and public references, readable IDs avoid ambiguous characters, and hex IDs fit systems that expect hexadecimal strings. Generation runs locally in your browser using the Nano ID library.

Nano IDs are identifiers, not passwords. For authentication secrets, use a dedicated token generator and security design with expiration, storage rules, and access control.