Need assistance/opinions with creating a PDF library page

I can't help too much with .NET.  But It does seem that creating a thumbnail to an image would be faster.  As a pdf is uploaded you can auto generate a jpg thumbnail.

I use image magick http://www.imagemagick.org/

Using command line http://www.imagemagick.org/script/command-line-processing.php

And I found this .net example http://imagemagick.codeplex.com/discussions/257915

using (ImageList imageList = new ImageList())
{
	imageList.ReadImages(inputFile);
	int pageIndex = 0;
	foreach (Image page in imageList)
	{
		page.Write(outputDirectory + "\\Page." + pageIndex + ".jpg");
		pageIndex++;
	}
}

using (Image firstPage = new Image())
{
	firstPage.Read(inputFile + "[0]");
	firstPage.Write(outputDirectory + "\\FirstPage.jpg");
}

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If you can figure out how to hit the command line via .net, Image magick is very useful.