Special note ⚠️

ArduinoJson 6 requires updating code written for version 5. Visit arduinojson.org for more information.

Changes since 6.2.0-beta

• Fixed JsonObject not inserting keys of type String (issue #782)

View version history

How to install

There are several ways to install ArduinoJson, from simpler to more complex:

1. Use the Arduino Library Manager
2. Download ArduinoJson-v6.2.1-beta.h put it in your project folder
3. Download ArduinoJson-v6.2.1-beta.zip and extract it in you libraries folder

Note: ArduinoJson-v6.2.1-beta.h are ArduinoJson-v6.2.1-beta.hpp are almost identical; the difference is that the .hpp keeps everything in the ArduinoJson namespace.

Try online

• JsonParserExample
• JsonGeneratorExample
• MsgPackParserExample