Creating a fully functional QR Code Generator tool with various options and a colorful design involves writing HTML, CSS, and JavaScript code. Below is an example of how you can achieve this using the `qrcode.min.js` library. Please note that you'll need to have the `qrcode.min.js` library added to your project for this code to work. ```html

QR Code Generator

Select QR Type: URL Text Mail WhatsApp Enter Content:

``` In this example, we have created a simple responsive QR Code Generator tool with options to select the QR type and input the content. The selected content is then used to generate a QR code using the `qrcode.min.js` library. When the user clicks the "Generate QR Code" button, the QR code is displayed below the button. You can expand upon this code by adding additional QR code types and styling as needed. Just make sure to adjust the `qrcode.min.js` library reference according to your project structure.