Creating Thumbnail from PDF without Adobe SDK

I've been looking for ways by which I can generate Thumbnails from pdf, as shown in the explorer. But the problem is that without Adobe Pro, the free version does not expose all ihe COM interfaces. Is there any other way? please 开发者_JAVA百科help.

Ghostscript (which is what ImageMagick uses) will generate images in a wide variety of different image formats... if you need something really obscure then use the imagemagick wrapper, otherwise, I prefer the straight dope.

If you can afford a commercial option, you could use Amyuni PDF Creator ActiveX for this task, (or .Net version if that suits your needs better). Using this product you can create jpg/png/bmp images from the first page of your PDF files with the specified resolution, and then use them as thumbnails.
Disclaimer: I am part of the development team of this product.

Here are other SO questions proposing other approaches (not involving COM):

• Using ImageMagic in command line
• Thumbnail of a PDF page (Java)