ArduinoJson
📟 JSON library for Arduino and embedded C++. Simple and efficient. (by bblanchon)
cJSON
Ultralightweight JSON parser in ANSI C (by DaveGamble)
| ArduinoJson | cJSON | |
|---|---|---|
| 24 | 17 | |
| 7,004 | 11,921 | |
| 0.3% | 1.0% | |
| 8.0 | 5.0 | |
| 5 days ago | 4 months ago | |
| C++ | C | |
| MIT License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ArduinoJson
Posts with mentions or reviews of ArduinoJson.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-12-22.
- How can I obtain weather info?
-
Creating Pixel Art with Web Interface using ESP8266
I'm using the library ArduinoJson to storage arts in the ESP8266 memory at JSON format. But, i'm have difficult to storage more than 4 drawings, possibly because i don't know how scale, optimize and manager the memory space.
- Question regarding ArduinoJson.h Connection
-
Converting an array of byte characters from an API into bytes using ArduinoJSON?
I've logged a github issue, but I'm not convinced I've asked the right questions as I've never had to do anything like this before - am I missing something obvious?
-
Sending arrays through serial line between 2 arduinos
https://arduinojson.org
-
[looking for help] Config File in SD Card
Also, if you want a nice way to encapsulate data, look at ArduinoJson (https://arduinojson.org/). All your information can be stored as easily identifiable strings in a JSON format. I use it all the time and it removes a lot of the mucking about with figuring out how to parse your data to/from file.
- ESP32 HTML e-Paper
-
Gamepad app with analog Joystick mode for your ESP32 projects to control your Robots using Websockets.
The format is simple JSON data and self explanatory, no binary coding, just simple text, which you can decode using https://arduinojson.org/.
- #Beguiner how can i fill my json structure from an online or off life tool
- Easiest method to get somewhat large array of information off an ESP8266
cJSON
Posts with mentions or reviews of cJSON.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-04-13.
-
Why Fennel?
> I'm assuming your statement would be meant to apply to other common languages without s-expressions, but maybe I've misunderstood.
It was meant for C specifically. Take a JSON document. Define it in C. Here's what I see on a random cJSON GitHub project:
https://github.com/DaveGamble/cJSON/blob/master/README.md#ex...
Now do that in JavaScript:
```
- CJSON: An Ultralightweight JSON Parser in ANSI C
-
Botlib: Telegram Bots in C by Antirez
It’s a library he’s including directly. It’s the same.
https://github.com/DaveGamble/cJSON
- Made a web app (URL Shortener )in C
- l
-
A good C library to parse json data
a quick google search is always easier than a whole reddit post cJSON
-
jemi: a compact JSON serializer for embedded systems
This is quite similar to cJSON, although cJSON leans more towards dynamic memory allocation.
-
Is there a de facto standard JSON library for C?
If 'de-factoness' (urgh) was measured in GitHub stars, then https://github.com/DaveGamble/cJSON would win.
- cJSON can't parse strings with a zero character in it, because strings are zero terminated in this api. But doesn't that make it absolutely useless for production? Like, one /0 and my programs crashes/can't parse? Why can't it be escaped?
- CJSON – Ultralightweight JSON parser in ANSI C
What are some alternatives?
When comparing ArduinoJson and cJSON you can also consider the following projects:
json - JSON for Modern C++
json-c - https://github.com/json-c/json-c is the official code repository for json-c. See the wiki for release tarballs for download. API docs at http://json-c.github.io/json-c/
RapidJSON - A fast JSON parser/generator for C++ with both SAX/DOM style API
Jansson - C library for encoding, decoding and manipulating JSON data
yaml-cpp - A YAML parser and emitter in C++
JSMN - Jsmn is a world fastest JSON parser/tokenizer. This is the official repo replacing the old one at Bitbucket