Web QR-Code Sticker Printer

For my company Awizohub, I need a streamlined, web-based tool that lets me generate and print QR-code stickers in multiple label sizes without fussing over which printer I am using. From a single Google Chrome tab I want to: • Type or bulk-paste the data that the QR code should hold (CSV upload is fine). • Pick a predefined label template or quickly enter custom width, height, gap, and margin. • Preview the sheet/roll so I can confirm alignment before wasting labels. • Hit “Print” and have the app push a perfect layout to any connected printer—desktop laser, ink-jet, or thermal label printer—leveraging the browser’s print dialog or a PDF download. Accuracy is critical: the printed code must stay within tolerance so every scanner reads it first time. A responsive interface, clean codebase (preferably modern JavaScript with a lightweight backend), and clear deployment instructions will be part of your deliverable. Source must be documented well enough that I can extend it later to other symbologies if needed. When you hand it over I will test: 1. Layout fidelity across at least three label sizes. 2. Successful scan of random QR codes using a mobile device. 3. Consistent output from Chrome on Windows and macOS. If you have built similar print-accuracy apps before, please mention the stack you used and any live demos.