JSON
JSON Document
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that is easy for humans to read and write and easy for machines to parse and generate.
What is JSON Document?
JSON is a language-independent data format derived from JavaScript. Originally specified by Douglas Crockford in the early 2000s, it has become the standard format for asynchronous browser/server communication, replacing XML in many modern web applications and APIs. JSON supports basic data types such as strings, numbers, booleans, null, arrays, and objects.
Advantages
- Human-readable and self-describing structure
- Lightweight and minimal syntax overhead compared to XML
- Native parsing support in JavaScript and most modern programming languages
- Widely adopted standard for REST APIs and web services
- Easily convertible to other formats like YAML, XML, TOML, or CSV using ConvertX
Limitations
- Lacks native support for comments
- Limited data type support compared to binary formats or XML (no built-in dates or undefined values)
- Can become difficult to read and manage in large, deeply nested files
How to open JSON Document files
VS Code
Sublime Text
Notepad++
Any modern web browser (Chrome, Firefox, Edge)
ConvertX online tools
Common use cases
- Transmitting data between a web application and a server in REST APIs
- Storing application configuration files and settings
- NoSQL database document storage (such as MongoDB)
- Serialization and logging of structured data objects
Explore other formats
Frequently asked questions
JSON stands for JavaScript Object Notation.
No, the official JSON specification does not support comments. Some parsers or related formats like JSONC or JSON5 allow them, but standard JSON does not.
You can use ConvertX tools to easily convert JSON files to YAML, XML, TOML, or CSV formats.
Yes, JSON keys and string values are strictly case-sensitive.