Download
ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things). ArduinoJson has a simple and intuitive syntax to handle objects and arrays. ArduinoJson supports both JSON serialization and deserialization. ArduinoJson uses a fixed memory allocation, allowing to work on devices with very little RAM. ArduinoJson can filter large inputs to keep only fields that are relevant to your application, thereby saving a lot of memory. ArduinoJson can parse directly from an input Stream or std::istream. ArduinoJson can produce compact or prettified documents. ArduinoJson works directly with strings stored in program memory. ArduinoJson supports two coding styles, with implicit or explicit casts. ArduinoJson deduplicates strings in the JSON document. When you have several identical keys or values, the JsonDocument only stores one of each. In practice, this feature reduces memory consumption by 20-30%.
Features
- Optionally decodes UTF-16 escape sequences to UTF-8
- Optionally stores links to the input buffer (zero-copy)
- Supports single quotes as a string delimiter
- Consumes roughly 10% less RAM than the "official" Arduino_JSON library
- Supports custom allocators (to use external RAM chip, for example)
- Usable on any C++ project (not limited to Arduino)
Project Samples
