: QRCode.js supports all modern browsers and even older ones like IE6+, as it can fallback to using HTML tables if canvas isn't supported.
: Sometimes the img tag takes a millisecond to populate after the new QRCode() call. If your download button returns an empty file, ensure you are calling the download function after the generation is complete. Alternative Libraries qrcode.js download image
Download QR Code Use code with caution. Step 3: Generate the QR Code : QRCode
Use code with caution. Step 2: Set Up Your HTML qrcode.js download image
This guide explains how to use to generate a code and then implement a custom script to download that generated image. Step 1: Include the QRCode.js Library