Reset Pictures in PowerPoint for the Web

Once a picture is inserted within PowerPoint, any manipulations you make to that picture are strictly only on the surface. The appearance of the picture changes on the slide, but the unaltered picture is stored within your PowerPoint presentation. This is an awesome feature because if you make many changes to a picture and then regret, you can just reset your picture rather than starting all over again! There's one caveat, though. The option to reset any picture back to its original form works only if you have not run any compression options for pictures within your presentation.

To reset a picture in PowerPoint Online, follow these steps:

1. Open your presentation, and navigate to the required slide where you have already inserted a picture. If your picture is not already customized, go ahead and apply some changes. The picture that you see within Figure 1, below was flipped horizontally; and a Picture Style was also applied.
2. 
   Figure 1: Customized picture selected
2. Make sure you select the picture so that you see the contextual Picture Tools Format tab in the Ribbon, as shown highlighted in blue within Figure 1, above.
Note: The Picture Tools Format tab is a Contextual tab. Contextual tabs are special tabs in the Ribbon that are not visible all the time. They make an appearance only when you are working with a particular slide object which can be edited using the options within these tabs.
3. Within the Picture Tools Format tab, click the Reset Picture button (highlighted in red with Figure 2).
4. 
   Figure 2: Reset Picture
5. This action removes any customizations and resets the picture, as shown in Figure 3, below. Do note that the flip effect hasn't been reset.
6. 
   Figure 3: Picture reset