Work through this in order
- Use a copy of the presentation.
- Open the PPTX Slide Text Viewer and choose the local PPTX.
- Review each slide heading and text excerpt.
- Compare with speaker notes where available.
- Use trusted presentation software for charts, images, slide transitions or animations.
Use the matching tool
Inspect a local copy with PPTX Slide Text Viewer. After the check, save or repair files only using trusted software that supports the format.