UUID Studio

Convert UUID bytes between every common text format — or compare two blobs to see if they represent the same value.

Paste below — detection is automatic

This menu only resolves how your pasted text is decoded. After a successful parse, open All conversions for every string form—URN, braced GUID, BSON, Base64 variants, uint128, and more.

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.