How to: Retrieval of thumbnail URLs (GroupDocs.Viewer)

GroupDocs.Viewer Product Family
1

Hello,


I just want to ask if there is a way that we can retrieve the thumbnail of the files being previewed programmatically? We want to use those thumbnails as a profile image. Below is a sample link of a file thumbnail.

https://testsite.com/document-viewer/GetDocumentPageImage?path=temp%5cS%5cTest_PPTFILE.pdf&width=150&quality=20&usePdf=True&useHtmlBasedEngine=True&rotate=False&locale=en-US&pageIndex=0
2

Hello,

Thank you for the request. Unfortunately GroupDocs.Viewer doesn’t have a special method to obtain document thumbnails. But you can try to get them via the URL from your request. You should do next:

  1. Generate document cache as described here.
  2. Use the URL to get thumbnails with such header parameters: http://prntscr.com/90ouf1

Where:

  • path – file name
  • pageindex – page number
  • useHtmlBasedEngine:False – should be false always.

Best regards.