Converting bitmaps to vector drawings with MS PowerPoint

Bitmaps are images made of small color dots called pixels. They are like photos or paintings because once the colors are mixed to form the image it is very hard to separate them again.

Digital photos, jpg, gif, tiff, etc., are all kinds of bitmaps.

The bigger the image the more dots information that needs to be saved and the bigger the resulting digital file.

There should be a better way to compose digital images, and there is: vectorized images. In a vector drawing computers don't actually save the image but the information needed to reconstruct it from geometrical traces, lines (from point A to point B), circles (with radio r and center in point C), ovals, arcs, triangles, squares, etc., and color fillings or gradients in certain areas.

The resulting image has some other advantages over the bitmapped version: can be resized without loosing detail or degrading quality, can be modified element by element, color by color, can be converted to several formats, and uses far much less disk space, or email space, than the bitmap.

But, you may have found yourself with an image (a bitmap) that cannot be resized because it looks really ugly with all those big squares appearing (when pixels grow they become squares), and cannot be placed on top of an image composition because its green background cannot be changed.