QR Code Generator

This API is a Flask-based RESTful API that takes a 'GET' request and generates a QR code image from a URL string. The API endpoint is /qr and it requires a url query parameter to be provided in the GET request. The API uses the qrcode library to generate the QR code image, which is returned as a PNG image in the response body. The response header also includes the content-type header set to 'image/png'. To use this API, make a GET request to the /qr endpoint with the desired URL string as t...