To export the SVG files in Illustrator, go to ‘File >, Save a Copy…’ and choose ‘SVG’ as the format. Uncheck all the Illustrator options which generate unused informations we don’t need.These extra informations make your SVG file heavy, and can create problem when you import them in Fontastic. Solution: expand the strokes.Fontastic cannot import SVG with strokes, you have to expand them in Illustrator. Solution: expand the strokes See how expand the strokes in the answer above:“My icons are ignored when I upload them” The reason: in Illustrator, the artboard is too big compared to the icon. you will import the icon in Fontastic, it will look small, as the icons dimensions are defined by the artboard size. Be careful to not using white filled shapes in your icons. Use only 1 solid color for your colors, as Fontastic only allow one color icon. See below how to substract a shape from another shape to create empty space: Source.