Connect

Full-Screen Text View

0 matches

CBOR Encoder & Decoder

A powerful and free online tool to handle CBOR Encoder & Decoder operations instantly in your browser. Fast, secure, and fully local by OrbitInfra.

JSON Data Input
CBOR Hex Output

Understanding CBOR: Concise Binary Object Representation (RFC 8949)

CBOR (Concise Binary Object Representation, RFC 8949) is a binary data serialization format designed for high performance and extremely small message footprints. It is the data protocol of choice for IoT devices, WebAuthn/FIDO2 biometric keys, and constrained network protocols (CoAP).

This tool allows developers to encode JSON objects into compact CBOR binary hex sequences or parse raw hexadecimal CBOR packets back into human-readable JSON structures.

How to Use

  1. Select whether you are encoding (JSON to CBOR) or decoding (CBOR to JSON).
  2. Paste your input data (JSON string or hexadecimal CBOR bytes) into the editor.
  3. Click "Convert" to process the data via the RFC 8949 serialization engine.
  4. Review the output alongside byte size metrics and copy the result.

Key Features & Capabilities

  • Two-way conversion: JSON to CBOR hex, and CBOR hex back to formatted JSON.
  • Supports all standard CBOR major types (integers, byte strings, text, arrays, maps, tags).
  • Shows exact byte size savings compared to standard UTF-8 JSON.
  • 100% private client-side execution.

Common Developer Workflows

  • Debugging WebAuthn and Passkey credential registration payloads (FIDO2 `clientDataJSON` and `attestationObject`).
  • Inspecting IoT telemetry packets transmitted across Bluetooth Low Energy (BLE) or LoRaWAN.
  • Analyzing blockchain smart contract serialization data (such as Cardano transaction metadata).
  • Benchmarking serialization overhead for low-bandwidth embedded devices.

Frequently Asked Questions

Why use CBOR instead of JSON?

CBOR achieves significantly smaller payload sizes, encodes raw binary data without Base64 overhead, and parses much faster on resource-constrained embedded microcontrollers.

How does CBOR relate to WebAuthn?

WebAuthn and FIDO2 standards mandate CBOR for encoding authenticator responses, cryptographic keys, and attestation certificates.

Does this tool support CBOR diagnostic notation?

Yes, it provides both raw hexadecimal byte sequences and structured JSON representations.