NanoID

Validation

Validates a default 21-character NanoID.

/^[A-Za-z0-9_-]{21}$/

How it works

NanoID by default produces 21-character URL-safe IDs. The default alphabet is A-Z a-z 0-9 _ -. Custom alphabets and lengths exist; this regex matches the default.

Test Cases

Should Match

V1StGXR8_Z5jdHi6B-myT
abcDEF123-_xyzABC1234

Should NOT Match

V1StGXR8_Z5jdHi6B-my
V1StGXR8_Z5jdHi6B-myTT

Quick Summary

Matches default 21-character URL-safe NanoIDs (A-Z, a-z, 0-9, _, -).