You need SVG type files for vinylcutting and pcb milling. Sometimes, you get a dimension error in mods when you upload your file as seen in the image.

SVG error

One way to solve this problem is to open the SVG file in Illustrator and save it again without a check mark next to Responsive.

SVG correction

What this accomplishes is that the dimensions of the SVG image becomes absolute and not relative to the dimensions of the medium it is viewed in.