This is incredible. So I'm looking for some nice cards, and I too find the nice SVG cards you linked to. Then I run into the problem of the large white canvas/background. Not knowing anything about SVGs, I download Inkscape and discover the "resize page to content" function in the properties menu. So I do a couple manually before realizing it will take way too long, so I google it, which leads me here, to your page - where I find you have already sorted out this exact problem.