Building a Chrome Extension for JSON-FormData Data Format Conversion Using Python

This article introduces how to build a Chrome extension using Python to convert JSON data to FormData format and vice versa, improving development efficiency through browser-based data format conversion.

The project aims to use Python to create a Chrome plugin that enables bidirectional conversion between JSON and FormData formats through custom Chrome extensions and JavaScript code. The plugin code and Python scripts for data conversion are developed to allow users to conveniently perform data format conversion in the browser.

Before starting, ensure Python and Google Chrome are installed, along with basic knowledge of Python and JavaScript programming. Required dependencies include Flask for building the backend server and Flask-CORS for handling cross-origin requests.

The project structure includes a chrome_extension folder for plugin-related code and configuration files, a server folder for backend server code, and an app.py script for handling data conversion requests.

The Chrome plugin implementation involves creating manifest.json for plugin configuration, popup.html for the user interface, popup.css for styling, and popup.js for the conversion logic. The plugin allows users to input data and convert between JSON and FormData formats with two buttons.

The backend server is implemented using Flask and Flask-CORS to handle conversion requests. The app.py script defines a /convert endpoint that processes POST requests and returns converted data in both FormData and JSON formats.

After loading the plugin in Chrome, users can input data in the popup interface and click buttons to convert between formats. The backend server can be tested using tools like Postman by sending POST requests to http://localhost:5000/convert.

This project demonstrates how to create a practical Chrome extension for data format conversion, combining frontend development with Python backend services to enhance web development workflows.