Support the Importing of slides in PowerPoint – Welcome to the Office Developer Platform suggestion box!
It's unfortunate that there is no way use CoercionType .Ooxml in Powerpoint. This feature both get and set would benefit a lot of end users!
I second this. Currently, there is no way to insert an existing slide into a deck using JS API. Unlike Word and Excel, PowerPoint is unique in a way that Slides are shared, reused, stored by many Companies as a single unit (instead of the whole document). I am surprised that no feature exists now to insert a slide to an existing presentation either as OOXML or as FileFromBase64.
We would also need to be able to easily import all the slides from a base64 file after the current slide of the current presentation. Our target audience would not want to edit Ooxml themselves.
Adding Ooxml to PowerPoint and Excel would be fantastic. I imagine that some Ooxml processor is already in use by PowerPoint and Excel simply in opening and saving files. If giving developers the broader access to Ooxml that Word has is too cumbersome, it would be useful to at least be able to get/set the entirety of the PowerPoint presentation/Excel workbook.