Convert between CBOR, CDN (CBOR-EDN), and JavaScript values

@cbortech/cbor is a zero-dependency TypeScript library implementing RFC 8949 CBOR and Concise Diagnostic Notation (CDN / CBOR-EDN) — encode, decode, parse, pretty-print, and round-trip with full fidelity. Everything on this page runs in your browser using the library itself.

npm install @cbortech/cbor

Lossless round-trips — encoding widths, indefinite lengths, duplicate map keys, and comments survive CDN (CBOR-EDN) ⇄ CBOR conversion.
JSON-like API — CBOR.parse / CBOR.stringify with reviver and replacer support.
AST access — inspect every data item with byte ranges, warnings, and annotated hex dumps.
Extensible — built-in app-string extensions: dt'…' / DT'…', ip'…' / IP'…', cri'…' / CRI'…', b32'…', h32'…', float'…', same'…'. This playground additionally enables @cbortech/hash-extension (hash'…') and @cbortech/uuid-extension (uuid'…' / UUID'…').