CBOR File Format

Concise Binary Object Representation category

CBOR は JSON をよりコンパクトにしたバイナリ形式です。IoT や帯域が限られた通信で使われます。

Typical use: CBOR を JSON/CSV に変換して中身を確認します。

About the CBOR format

CBOR は JSON の考え方をバイナリに移した形式です。小さく、解析が速く、IoT などの制約ある環境に向きます。

中身を確認するには JSON への変換が便利です。

Strengths

✓ JSON より小さい
✓ 規格が明確（RFC）
✓ バイナリも扱える

Limitations

✗ 人が直接は読めない
✗ テキスト検索ができない

Structure: Binary tagged values
Types / schema: Numbers, strings, arrays, maps
Compatibility: WebAuthn, COSE, IoT
Best for: Compact machine-to-machine data

Convert CBOR to…

5 direct directions plus 3 workflows, sorted A–Z; 🔥 marks popular targets.

CBOR を CSV に変換 Hot CBOR を JSON に変換 Hot CBOR を XML に変換 Hot CBOR を YAML に変換 CBOR を YML に変換

Cross-engine workflows

CBOR を BZ2 に変換 CBOR を GZ に変換 CBOR を XZ に変換

Convert other files to CBOR…

JSON を CBOR に変換 Hot XML を CBOR に変換 Hot YAML を CBOR に変換 YML を CBOR に変換

Frequently asked questions

What is a CBOR file?

CBOR is binary JSON under an IETF standard (RFC 8949) — same data model, a fraction of the size, used by COSE, WebAuthn and IoT devices.

How do I convert CBOR files online?

Pick a target format from the "Convert CBOR to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.

Is it safe to convert CBOR files here?

Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.

Which formats can CBOR convert to?

This page lists all 8 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.