Responsive Design

Responsive design is a web design method that provides, from a single HTML file, an optimal layout for different screen sizes such as PCs, tablets, and smartphones. Using CSS media queries, it switches the number of columns, the font size, the image size, and the display format of the navigation according to the screen width.

For pages linked from QR codes, responsive design is not an option but a mandatory requirement. The majority of devices that scan QR codes are smartphones. When a page designed for PCs appears at the end of a QR code, the user experience is severely harmed: text is too small to read, buttons are hard to tap, horizontal scrolling becomes necessary, and so on. It is a problem that leads directly to the drop-off rate after the scan.

There are points that need particular attention on a QR code landing page. First, place the most important information and the CTA in the first view (the area visible without scrolling). Because a smartphone screen is small, visitors will leave if you do not convey the value before they scroll. Second, the size of tap targets. Apple's guidelines recommend a minimum of 44 by 44 points, and Google recommends 48 by 48 dp. Third, loading speed. Assuming access over mobile networks, it is important to optimize images and remove unnecessary scripts.

With Google's mobile-first indexing, the quality of the mobile version of a page directly affects its search ranking. If you also want traffic from QR codes to lead to better evaluation by search engines, the quality of the responsive design determines the SEO of the landing page.