What is Vector and Rastor image ?

There are two main type of image files: Raster and Vector. Raster images are more common in general such as jpg, gif, png, and are widely used on the web. Vector graphics are common for images that will be applied to a physical product. Also used in CAD, engineering, and 3D graphics which we do not provide information nor services for.

When using a raster program you paint an image and it's similar to dipping a brush in paint and painting. You can blend colors to soften the transition from one color to another.

When using a vector program you draw the outline of shapes: e.g. an eye shape, a nose shape, a lip shape. These shapes display one single color each.

A lot of images can be made with either raster or vector program and look exactly the same on both programs. Images with a subtle gradation of one color to another are the images that will look most different since vector programs need to create a separate shape for each shade of color.

Some vector programs do have the ability to create color gradients within one single shape, but these are actually raster effects. A vector graphic with gradients contains both vector and raster elements and won't be suitable for process that requires 100% vector or true vector art.

Photographs are raster images and are probably the best example of images completely made of color blends - or shade blends in the case of black and white photographs - and those images look very different when drawn in vector format.