Are there some tricks to get sharper icons resolution in grasshopper custom component? or is it just the resolution of the original foto?
Even though the icon is created at a high resolution or even as a vector graphic, Grasshopper only accepts it with dimensions of 24x24 pixels. To still make the lines appear defined, they need to be aligned to the pixel centers and have exact pixel widths. A good trick is to use a 24x24 grid and align the drawing and its line thicknesses to it.