From Repair Kit:
This Microsoft PowerPoint repair software is compatible with a broad range of PowerPoint file formats, and can be used in all major versions of Windows. The list of objects that can be extracted from damaged files includes text, text styles and effects shapes, images and embedded media files. Due to certain restrictions imposed by the PowerPoint document format, media objects are extracted to a separate folder on the user's hard drive, and need to be added to the final document manually.
Similarly, charts are extracted into Excel spreadsheets that can be edited and restored in PowerPoint immediately after recovery. The product is the optimal choice for users seeking an answer to the question How to repair PowerPoint files online?