I attach a simple library (about 15.000) of very useful and customizable icons to enrich our dashboards in terms of graphics and layout.
I personally use PowerPoint in all its graphics capabilities, and up to now I was able to perform 95% of the necessary changes such as:
. scaling, Alpha transformation, Different color, Transparent background, Boundaries, borders, gradients, shadows etc etc.
A little previous ;-)
CLick to this link for view the video of manipulkate img into the ppt!