Add Dropbox in PowerPoint for the Web

When you launch PowerPoint Online, it opens Presentation Gallery that provides you with a list of recently opened PowerPoint documents, and Themes and Templates to start a new presentation. You can also click the Open from OneDrive option, highlighted in green within Figure 1 to navigate your OneDrive folders so as to locate a PowerPoint file to open within PowerPoint Online. Other than OneDrive, PowerPoint Online also supports Dropbox as a cloud alternative.

In this tutorial, we will explore adding Dropbox to PowerPoint Online's Place locations:

1. Open the Presentation Gallery and click the Add a place option, highlighted in blue within Figure 1.
2. 
   Figure 1: Add a place option within Presentation Gallery
2. This brings up the option to add more places, by clicking checkboxes, as shown in Figure 2. Notice the Dropbox checkbox (highlighted in blue within Figure 2).
3. 
   Figure 2: Dropbox checkbox
3. Click to select this checkbox as shown highlighted in blue within Figure 3. You can see the resultant Open from Dropbox option now, as highlighted in green within Figure 3.
4. 
   Figure 3: Select the presentation name
4. Click the Open from Dropbox option. For the first time, you may see the Sign in to Dropbox dialog box as shown in Figure 4.
5. 
   Figure 4: Sign in to Dropbox dialog box
5. Type in your Dropbox username and password to navigate your Dropbox folders, and to select a PowerPoint file that you want to open into PowerPoint Online.