MS Office Previews
Something that comes up often is the failed preview and or thumbnail generation for MS Office documents. We have now overhauled how this works, so more of your documents will get a visual preview of the first page.
There are still some limitations. Please see below.
- Previews are supported for files up to 150MB - i.e., any Office files larger than this won't have a visual preview. This is a limitation from Microsoft themselves in their online API, which we now use, so out of our control.
- Previews are supported for all main Word, PowerPoint, Excel, and Outlook file types apart from PowerPoint Template files (.potx). Again, this is a limitation of Microsoft's own API. The specific Office (and OpenOffice) file types that are supported for previewing are these: doc, docx, dot, dotx, dotm, msg, odp, ods, pps, odt, ppsx, ppt, pptx, rtf, xls, xlsx, xlsm.
For any files where the thumbnail is not generated, you can, of course, still add a custom one.