QR is an excellent way to encode data, its easy to create and read, which makes it a great choice for businesses who prefer to use quick code solutions. The website is quite simple, it's good that it has lots of options such as color selection, fonts etc. but sometimes it doesn't work well in mobile devices. I've used it in several projects, it always helped, i think it's a very good tool to get your clients the information they need on short notice. With this kind of service you can transmit any information on a small square of paper. QRcodes are easy to scan and link to websites, and they're a simple, non-intrusive way to capture attention that is especially effective at small sizes. They're also easy to customize, and the API is a simple and intuitive way to add them to your website. I haven't found any downsides so far. I'm using QRcodes to help users scan and link to my website. I've found that they convert better than most other forms of marketing.