Just to confirm the therms used.

> **DPI**: Dot’s per inch. The number of dots in a printed inch. The more
> dot’s the higher the quality of the print (more sharpness and detail).
> 
> **PPI**: Pixels per inch. Most commonly used to describe the pixel density
> of a screen (computer monitor, smart phone, etc…) but can also refer
> to the pixel density of a digital image.
> 
> **Resolution**: Resolution is the measure of pixels in the display,
> usually expressed in measurements of width x height. For example a
> monitor that is 1920 x 1080 is 1920 pixels across and 1080 pixels
> down.
> 
> Higher resolution means more detail. Higher DPI means higher
> resolution. Resolution is not “size”, but it’s often confused with it
> because higher resolution images are often bigger, but that doesn’t
> necessarily have to be the case.


Now to your question:

Insert a high resolution image in Power Point.

Right Click and select Format Picture ->size.

In this screen select the Resolution.


![resolution][1]

If you now click on the Compress in PP menu bar you can compress the file if you want to reduce the DPI.

![compress][2]

![dpi][3]

If you want to export Pictures from PP2011 that you already have, than the highest resolution is equal to the original as saved, means PP would have reduced its size/resolution. Not so if you are making new presentation and save the picture in it its original size/resolution.


  [1]: https://i.sstatic.net/BWGiR.jpg
  [2]: https://i.sstatic.net/kM4eI.jpg
  [3]: https://i.sstatic.net/jRdQP.jpg