What does splitting a presentation produce?

One presentation per slide, or per group of slides, each a complete file that opens on its own.

Do the split files keep the original design?

Yes, when slides are cloned into the new presentations: each carries its layout, master and theme with it.

PPT, PPTX and ODP can be split, and each part is saved independently — so a single legacy .ppt can be broken into a set of .pptx files in one pass.

Yes. Sections are readable from the presentation, so their slide ranges can drive the split instead of a fixed count.

Extract slides from from PowerPoint PPT, PPTX & ODP files

Native APIs to split PowerPoint presentations & slides using .NET, .NET Core, Xamarin, Java, C++ & Android

What does splitting a presentation produce?
One presentation per slide, or per group of slides, each a complete file that opens on its own.
Do the split files keep the original design?
Yes, when slides are cloned into the new presentations: each carries its layout, master and theme with it.
Which formats can be split, and can the parts be saved as a different format?
PPT, PPTX and ODP can be split, and each part is saved independently — so a single legacy .ppt can be broken into a set of .pptx files in one pass.
Can I split by section rather than by slide?
Yes. Sections are readable from the presentation, so their slide ranges can drive the split instead of a fixed count.