SVG is refused by most social networks, marketplaces and document editors. TIFF keeps full quality and is what print shops and archives ask for. SVG is at home in logos, icons and illustrations that must scale; TIFF is the usual choice for scans, print production and archiving.
TIFF holds a single still image, so an animated SVG does not stay animated. The defaults suit most files. Under Options you can resize the result and set the scale the vector is rendered at.
The SVG is drawn at its own width and height (taken from its viewBox if it has no size) times the scale set under Options, scaled down if that would pass 16,384 pixels a side or 64 megapixels. Scripts inside the SVG never run and files it links to are not fetched, so text in a font the SVG does not embed is drawn in a fallback font.