How do I get thumbnails for my document collection?

[Support]

Q:

 

Hi, I am using DocPub to optimize PDF for viewing in WebViewer.

 

I would also like to display a list of document thumbnails in my web app.

 

I see that PDFNet SDK includes PDFDraw class that I can convert PDF/XPS/XOD pages to thumbnails, however I am using DocPub.

 

Is there any other way to get thumbs for my XOD files?

 

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A:

 

XOD files by default include thumbnails for all pages so there is no need to generate or render additional images.

To obtain generated thumbnails you can:

 

a) From WebViewer (in JavaScript): call CoreControls.Document.LoadThumbnailAsync() function.

b) Fetch thumb from XOD on the server side. Since XOD files are just zip files, the thumbnail can be extracted from the /Thumbs folder. For example /Thumbs/1.png would be the cover page.

 

An added benefit is that you do not need to waste CPU resources generating thumbs two times.