UUID Studio

UUID Studio

NanoID Generator

Small, URL-safe unique strings.

  • đź”’ No data stored or uploaded
  • ⚡ 100% client-side
  • 🆓 Free, no account
Click Convert when ready

Override only when Auto cannot parse your paste. Changing this loads a matching sample into Input — click Convert to run. Use Load sample to cycle every format example.

All conversions

Read-only representations of the same 16 bytes. Every textual form is listed here, not in “Prefer format”.

Paste two values: if both sides are valid JSON, a structural diff appears; otherwise UUID / bytes are compared when both decode to the same format.

A
B

Create or edit JSON here (syntax colors), then format, validate, or convert - same as MongoDB $binary UUID blobs on the Convert tab once detected.

New document

Hash, HMAC, AES-GCM/CBC + RSA-OAEP, codecs, JWT decoding, UUID v4, and secure random - all client-side. JWTs use Base64URL (three segments), not a single MIME Base64 block - use Decode JWT below, not raw Base64 decode.

Examples

  • Length 
    21
  • Custom alphabet 
    ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_

About NanoID Generator

Not every identifier needs to be a full UUID - sometimes you just want something short, URL-safe, and unlikely to collide, without 36 characters of hyphens eating into a URL slug.

NanoID generates compact, cryptographically secure random strings using an unbiased alphabet-sampling algorithm, with a length and custom alphabet you control. It's a common default in modern frontend tooling for exactly this reason.