Resolution: An image with a higher PPI tends to be higher quality because it has a greater pixel density but exporting at 300 PPI is generally considered industry standard quality.When the Type Optimized option is selected, anti-aliasing is applied to the text edges, making them a lot smoother. Type Optimized: Use this option, if your artwork comprises mostly text.Art Optimized: Use this option, if you have downscaled the pictures in Illustrator.This setting removes jagged edges in the artwork by super-sampling it. Anti-aliasing: This option is used for smoothing of jagged edges in digital images by averaging the colors of the pixels at a boundary.
