Thanks! Yes that would work, just like an .html file would work. The advantages of SVG in this case are - the OS previews it as an image, but on click it opens

Thanks! Yes that would work, just like an .html file would work. The advantages of SVG in this case are - the OS previews it as an image, but on click it opens a website (which to be fair, once you click on a downloaded file, you're already done) - SVGs are allowed in any "image/*" form, bypassing certain filters