The audience can see your PowerPoint notes: check Presenter View

Check the presentation in the format people will actually use

Save a copy of the presentation before changing layout, output settings or embedded media. Note the PowerPoint version and whether the deck depends on external fonts, linked files or an online service. A presentation that works on the author’s computer may rely on something not included in the delivered file.

Choose representative slides for testing: a title slide, one with dense text, one with an image or chart and any slide containing media. Review them at presentation size rather than only in the editing thumbnail pane. If a change affects slide dimensions or printing, inspect both the application preview and the physical display or printer that will be used.

Reopen the delivery copy and run the intended workflow from beginning to end. Check readable text, complete images, working media and the correct slide order. For a PDF or handout, verify that export settings match the purpose; an editing file, projected show and printed handout are separate outputs. Retain the original deck and record any linked assets that recipients must also receive through an approved sharing method.