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New_APIs/Codeforces_API/README.md

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+# Codeforces Rating Changes Visualization
+
+### Overview
+
+This project provides a simple web-based visualization tool to track and visualize changes in a user's rating on Codeforces, a popular competitive programming platform. It utilizes the Codeforces API to fetch user rating data and displays it using Chart.js library.
+
+### Features
+
+- Fetches user rating data from Codeforces API using a provided handle.
+- Displays rating changes over time in a line chart.
+- Customizable chart with options to adjust chart size and appearance.
+
+### Getting Started
+
+1. **Obtain a Codeforces API Key:** Before using this tool, you need to obtain a Codeforces API key. You can get it by registering on the [Codeforces website](https://codeforces.com/apiHelp)
+
+2. **Replace API Key and Handle:** In the provided HTML file, replace `'YOUR_API_KEY'` with your actual Codeforces API key and `'Your_Codeforces_Handle'` with the Codeforces handle for which you want to visualize rating changes.
+
+3. **Run the HTML file:** Simply open the HTML file in a web browser. It will fetch the user's rating data from Codeforces and display it in a line chart.
+
+### Dependencies
+
+- Chart.js: A JavaScript library for creating beautiful charts.
+