When working with SVG images that lack explicit width and height properties, one can encounter display issues across different browsers and devices after downloading a new QR code.
To prevent these problems and ensure consistent rendering, it is advisable to use Adobe Illustrator to add these missing properties. Simply open the file in Illustrator and, when exporting or saving the SVG, make sure to uncheck the "Responsive" option. By doing so, Illustrator will include the width and height within the SVG's code, thus preserving the intended dimensions and appearance on any platform where the image is displayed.