__OS X__
The easiest method is to just download the binary release of Imagemagick and configure CrushFTP to use it.

[attachments|imagemagick_config.png]


__Windows__

If you are using Windows, you will need to download and install ImageMagick.  ImageMagick is a free third party tool that handles the conversion of many different file formats.  Its used to convert the images to small thumbnails.

[http://www.imagemagick.org/script/binary-releases.php#windows]

I generally get the top link via HTTP.

[attachments|imagemagick_link.png]

.

.

If you want to make thumbnails of PDF or TIFF images, then you will also need GhostScript installed.  Click on the latest release.

[http://pages.cs.wisc.edu/~ghost/]

Then click on either the 32bit or 64bit version.

[attachments|ghostscript.png]