We are pleased to announce the release of Spire.Presentation Python 8.9.0. This version adds a method to set custom DPI when saving shapes as images. Besides, it also fixes the issue that the program threw "System.NullReferenceException" when resetting the slide size. More details are listed below.

Here is a list of changes made in this release

presentation.Slides[0].Shapes.SaveAsImage(0, 300, 300);