Is it possible to save slides to a PDF from a Chromebook?

Is it possible to save slides to a PDF from a Chromebook?

When I export my slides to a PDF on my Chromebook, it doesn't do anything at all.  When I export my slides to a PPT or ODP, they change their formatting a bit.  What do you recommend doing to either preserve the formatting of the PPT and ODP files and/or save the show to a PDF version? Thanks so much!