Generators
Nano ID Generator
Generate compact, URL-safe IDs - shorter than UUIDs, just as safe.
Options
IDs
hn7TohHVWM9MVref0yKtw sU4ObmzZH5cl-S5YtTaSD W4LkKJomrtH8frpuKiP80 maWpu4gjt77Whewjnon5p DSQUe4ph3-AbmKWleK5Su
About this tool
Nano ID is a URL-safe alphabet (A-Za-z0-9_-) generator. The default 21-character ID has the same collision odds as UUID v4 but is 41% shorter. Useful for shareable short links, public IDs in URLs, and primary keys when you don't need timestamp ordering.
FAQs
Why not just use UUID v4?
Nano IDs are shorter (21 vs 36 chars) and URL-safe by default. Same effective collision-resistance at the default length. UUID still wins for interoperability with systems that expect UUID format.
Can I change the alphabet?
Yes - pick a custom set of characters (e.g. lowercase-only or numbers-only). Shorter alphabets need longer IDs for the same collision-resistance.
Is the randomness secure?
Yes - we use window.crypto.getRandomValues, the same CSPRNG used by Web Crypto. No Math.random.