JSON Editor

A JSON editor is a tool that allows you to create, edit, and modify JSON (JavaScript Object Notation) files. JSON is a lightweight data interchange format that is used to transmit data between systems and is often used in web applications and services to transmit data in a format that can be easily read and understood by computers.

A JSON editor typically has several features, such as:

Syntax highlighting: to distinguish between different parts of the JSON code
Automatic indentation: to properly format the JSON code
Data validation: to check if the JSON file is well-formed and correct.
Search and replace: to find and replace specific values or keys in the JSON file
Adding and removing elements: to add and remove keys and values from the JSON file

There are various online and offline JSON editors available, such as Oumify.

Also, many code editors have built-in JSON editors or have the ability to install a plugin to provide this functionality.

It's important to note that editing a JSON file may affect the functionality of the code; therefore, it's recommended to keep a backup of the original file and test the modified file in the intended system or application.