In PowerPoint for Windows, save a copy, then go to File > Info > Check for Issues > Inspect Document, tick Presentation Notes along with the other categories, click Inspect, and click Remove All next to each result you want gone. Hidden slides aren't part of the inspection, so delete those yourself. PowerPoint for Mac has no Document Inspector: delete notes and comments by hand and clear the author and company under File > Properties.
What a PowerPoint file keeps that you can't see
- Speaker notes on every slide, which recipients can read in the Notes pane.
- Comments from review, each with the name of whoever wrote it.
- Document properties: author, last saved by, company, title and dates.
- Hidden slides, skipped in the slideshow but still in the file.
- Off-slide content: anything sitting in the gray area around a slide.
- Invisible objects on a slide, set to hidden in the Selection Pane.
- Embedded files, such as an Excel chart with its whole workbook behind it.
Notes are the one people forget most. A deck built for a pitch often has the real numbers, the fallback price or blunt remarks about the client in the notes, and sending the .pptx sends all of it.
To see what your own deck contains, drop it into the Word and PDF metadata viewer. It reads PowerPoint files too and shows how many slides have notes, plus comments and hidden slides, in your browser.
Windows: use PowerPoint's Document Inspector
- Save a copy of the presentation. Removals can't always be undone.
- Open the copy and go to File > Info.
- Click Check for Issues > Inspect Document.
- Make sure Presentation Notes is ticked, along with comments, document properties, invisible on-slide content and off-slide content.
- Click Inspect, then Remove All next to each result you want gone.
- Click Reinspect to confirm, then save.
Document Inspector flags embedded documents and macros but doesn't always remove them, and it never looks at hidden slides. Open the slide sorter (View > Slide Sorter) and delete any hidden slide that shouldn't go out.
Mac: remove notes and comments by hand
PowerPoint for Mac doesn't have Document Inspector, so it's a few manual steps:
- Notes: open each slide's Notes pane and delete the text, or start from a copy and clear them slide by slide.
- Comments: on the Review tab, open the Delete menu and choose the option to delete all comments in the presentation.
- Properties: go to File > Properties and clear the author, company and any other fields.
- Hidden slides and off-slide content: check the slide sorter for faded slides, and zoom out on each slide to spot anything parked around the edge.
Share only the slides, as a PDF
Often the simplest fix is to send a PDF instead. Exporting the slides leaves out notes, hidden slides and off-slide content by default. Do still check the PDF's properties, and see removing metadata from PDFs if you need to clear them.
With Pro, the document cleaner removes names, comments, custom properties and dates from .pptx files in your browser. It keeps speaker notes unless you choose to remove them, so a deck you're handing to a colleague to present keeps working, and it flags hidden slides for you to deal with.