Editing & Viewing
The following is a list of file formats supported in Documents To Go for iPad/iPhone/iPod touch, as well as how each format is supported (view/edit/create, view-only, etc):
View/Edit/Create
- MS Word 97-2004 (.doc files)
 - MS Word 2007-2016 (.docx files)
 - MS Excel 97-2004 (.xls files)
 - MS Excel 2007-2016 (.xlsx files)
 
View/Edit
- MS PowerPoint 97-2004 Presentation (.ppt)
 - MS PowerPoint 2007-2016 Presentation (.pptx)
 - MS PowerPoint 97-2004 Template (.pot)
 - MS PowerPoint 2007-2016 Template (.potx)
 - MS PowerPoint 97-2004 Show (.pps)
 - MS PowerPoint 2007-2016 Show (.ppsx)
 - MS Word Macro-Enabled documents (.docm)
 - Text
 
View only
- PDF files
 - HTML files
 - BMP
 - GIF
 - JPG/JPEG
 - PNG
 - SVG
 - TIF/TIFF
 - MS Word 97-2004 /template (.dot files)
 - MS Word 2007-2016 (.dotx files)
 - RTF (not supported via Desktop Sync)
 - MS Excel 97-2004 Template (.xlt files)
 - MS Excel 2007-2016 Template (.xltx files)
 - MS PowerPoint Macro-Enabled (.pptm)
 - MS PowerPoint Macro Enabled Template (.potm)
 - MS PowerPoint Macro-Enabled Show (.ppsm)
 - Pages
 - Numbers
 - Keynote