Shape Dimension Options
There should be a way to get exact dimensions of shapes so you can make them the right proportions in the slide like in indesign.
You can now enter the exact dimensions of your shape in PowerPoint for the web. You can find the setting on the “Shape” tab when the shape you want to resize is selected, or by right-clicking on the object and choosing “Format Options.” Let us know what you think!
Add in the format shape controls - eg. size control