QR codes use PNG, JPG, SVG, and EPS formats. These formats are selected by clicking next to the download button, and the QR code is downloaded in the desired format. For choosing QR code format - best practices are detailed in the guide in the link.
PNG: The PNG format is one of the most commonly used formats and is preferred when the QR code will have a fixed size.
JPG: The JPG format is similar to PNG but is used because it is smaller.
SVG: The SVG vector format is used when frequent changes to the QR code size are needed.
EPS: The EPS format is similar to SVG and is used when a vector format is necessary.