OS X ImageMagick

Download the binary release of Imagemagick and configure CrushFTP to use it.

Get the pre-compiled binaries for OS X via the http link on this page: http://www.imagemagick.org/script/binary-releases.php

Extract the archive by double clicking it, and place the folder into your Applications folder.

Next, open the CrushFTP server settings and select the Preview tab.

From the drop down, pick imagemagick.

Set the Command Line to start with "./convert " instead of just "convert".

Set the working directory to be:

/Applications/ImageMagick-6.5.9/bin/

Set the Environment Variables to be:

MAGICK_HOME=/Applications/ImageMagick-6.5.9/;DYLD_LIBRARY_PATH=/Applications/ImageMagick-6.5.9/lib/

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.

Windows GhostScript

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.