
If it stays a nice clean line then it’s vector. Usually the easiest way to tell if a file is vector or not is to zoom in on your file as far as you can, does it go all blurry? If so it’s not vector.

There are lots of tutorials on the internet to show you how to use these programs. Vector files can be created in programs such a Adobe Illustrator, Corel Draw, Inkscape (free), Autocad or Draftsight (free). Shapes and lines make up vector graphics, which are fully scalable images, (you can make them HUGE without losing any quality) while raster images are made of pixels and cannot be scaled up without going blurry. A vector file is a graphics file that contains a vector image, rather than a raster, or bitmapped, image.
