ArduinoJson — A Simple and Efficient JSON Library for Arduino and Embedded C++

Overview

ArduinoJson is a C++ JSON library designed specifically for Arduino and IoT devices. It stands out for its simplicity, efficiency, and versatility, making it a popular choice for developers working on embedded systems. The library offers a range of features, including JSON deserialization, serialization, and MessagePack support, catering to various needs in data handling and communication.

Key Features

JSON deserialization with optional UTF-16 decoding, comment support, and filtering
JSON serialization with buffer/stream writing and optional indentation
MessagePack serialization and deserialization
Efficient memory usage and performance, with deduplication of strings
Support for custom allocators, various string types, and different stream interfaces

Use Cases

IoT developers using Arduino for device communication and data exchange
Embedded systems requiring lightweight JSON handling without sacrificing functionality
Projects needing to interface with systems using JSON or MessagePack for data transmission

Advantages

Smaller and faster than the official Arduino_JSON library
Consumes less RAM, making it suitable for memory-constrained devices
Versatile support for different data types and external memory
Portable and compatible with a range of C++ standards

Limitations / Considerations

The library is optimized for embedded systems and may not be as feature-rich as general-purpose JSON libraries
Customization and extended functionality might require deeper understanding of the library's internals

Arduino_JSON: The official Arduino JSON library, which ArduinoJson is often compared to for its efficiency and size.
mbed TLS: A library for secure communication, often used in conjunction with JSON libraries for IoT security.
ESP8266WebServer: A library for web server functionality on ESP8266, which can be used with ArduinoJson for handling JSON data.

Basic Information

GitHub: ArduinoJson
Stars: 7,062
License: Unknown
Last Commit: 2025-11-15

📊 Project Information

Project Name: ArduinoJson
GitHub URL: https://github.com/bblanchon/ArduinoJson
Programming Language: C++
⭐ Stars: 7,062
🍴 Forks: 1,155
📅 Created: 2014-01-10
🔄 Last Updated: 2025-11-15

🏷️ Project Topics

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