Here’s something new (to me anyway).

I was sent PowerPoint that was slow to open, and slow to print.  It was 6MB.  Too big considering the content but it still should have opened faster.

I had a look and found that many of the text boxes were in fact embedded docs
(R. click on the text box and you’ll see a Document Object option).

ppt embed doc

So I decided to check the file by clicking File>Info

Then selected Check for Issues then Inspect Document.

Document Properties was highlighted so I clicked Remove all and Close.

ppt embed doc prep

Hey Presto!

6MB turned into 1MB and it was fast to open an print.