CBOR to JSON

Convert between JSON and CBOR formats instantly in your browser

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7,544+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how CBOR to JSON processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

This CBOR Online Converter allows you to easily convert between JSON (JavaScript Object Notation) and CBOR (Concise Binary Object Representation) formats. CBOR is a binary data serialization format that's more compact than JSON and is used in IoT devices, web protocols, and efficient data storage. The tool works entirely client-side in your browser - no data is sent to any server. You can either paste JSON text, upload a JSON file, paste CBOR hex data, or upload a .cbor file. The converter supports both encoding (JSON to CBOR) and decoding (CBOR to JSON) operations with proper validation and error handling.

Save your calculation history with a free account

How to Use

Choose conversion direction: JSON to CBOR or CBOR to JSON
Either paste your data in the text area or click 'Upload File' to select a file
Click the 'Convert' button to process your data
View the converted result in the output section
Use the 'Download' button to save the converted data as a file
Use 'Copy to Clipboard' to copy the result for immediate use

Frequently Asked Questions

Find Quick Answers

What is CBOR?

CBOR (Concise Binary Object Representation) is a binary data serialization format similar to JSON but more compact. It's defined in RFC 8949 and is used in IoT protocols, web authentication, and efficient data storage.

Is my data secure?

Yes, all conversion happens entirely in your browser using JavaScript. No data is sent to any server, ensuring complete privacy and security for your sensitive information.

What file formats are supported?

You can upload JSON files (.json) for conversion to CBOR, or CBOR files (.cbor) for conversion to JSON. You can also paste text directly into the input area.

What is the maximum file size?

Since processing happens in your browser, the limit depends on your device's memory. For typical use cases, files up to 10MB should work well on modern computers and smartphones.

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