When you view a document shared in a Challo track, Challo uses an appropriate viewer from those available to display the content to you. Which viewer Challo uses depends on what the source of the content is, and how your organization’s Challo administrator configures your instance of Challo.

If a member of a Challo track chooses to view a document, Challo displays the latest saved version of the resource in their browser. Challo uses an appropriate viewer to display a particular document—for example, it uses the Google viewer for Google documents.

Challo maintains the identity of track members to display content and may pick different viewers for different track members. For example, if a track member authenticates with Google’s SSO, and opens a document that they have permission to edit, they can edit the document from within Challo. However, someone without permission to edit the document may use the Google viewer to display the document.

If a track member does not have access to a specific viewer, Challo may attempt to use a different viewer to display the document. For example, if someone cannot access Google Drive, because an administrator disables it, Challo displays the document inline as a PDF—see: Using alternative file viewers

Use the following table to find out which viewer Challo uses when you view content:

ApplicationFile typeViewerDetails
Track uploadsMicrosoft Word, Excel, PowerpointMicrosoft preview
Image files (gif, png, jpeg)Displays inline
Video files (mp4, mov, avi)Option to download
PDF documentsDisplays inline
BoxAnyBox viewer
Google DriveGoogle Doc, Sheets, or SlidesGoogle editor
Displays inline
If you have native permission, you open the document with the Google editor.
Otherwise, Challo uses the browser to display the latest saved version of the file.
Microsoft Word, Excel, PowerpointGoogle Drive viewer
Image files (gif, png, jpeg)Google Drive viewer
Displays inline
If you have native permission, you open the document with the Google Drive viewer.
Otherwise, Challo uses the browser to display the latest saved version of the file.
Video files (mp4, mov, avi)Google Drive viewer
Downloads
If you have native permission, you access the document with the Google Drive viewer.
Otherwise you download the video automatically.
PDF documentsGoogle Drive viewer
Displays inline
If you have native permission, you open the document with the Google Drive viewer.
Otherwise Challo uses the browser to display the latest saved version of the file.
DropboxAnyDropbox viewer 
JiraIssuesChallo web view 
Microsoft OneDriveMicrosoft Word, Excel, PowerpointCommercial:
Microsoft preview

GCC-H:
Google viewer
Image files (gif, png, jpeg)Commercial:
Displays inline

GCC-H:
Google viewer
Video files (mp4, mov, avi)Microsoft preview

GCC-H:
Google viewer
PDF documentsDisplays inline

GCC-H:
Challo viewer
Microsoft SharePointMicrosoft Word, Excel, PowerpointMicrosoft preview
Image files (gif, png, jpeg)Microsoft preview
Video files (mp4, mov, avi)Microsoft preview
PDF documentsMicrosoft preview
Microsoft TeamsChannelChallo web view
SalesforceRecordChallo web view
SlackChannelChallo web view
SmartsheetsChannelSmartsheet viewer
ZendeskTicketChallo web view