ImageMagick thumbnail generation and image preview
Web File Share can make use of ImageMagick utility for generating image thumbnails and previews for PDF, PSD and other advanced file formats. ImageMagick also enables support for large (high-res) pictures in Web File Share.
GraphicsMagick (http://www.graphicsmagick.org) can also be used, and in some cases it can be faster and more efficient than ImageMagick
Please see http://www.imagemagick.org
Hewlett-Packard Graphics Language (HPGL) plotter files (.plt) can also be previewed with Web File Share and ImageMagick by installing “Hp2xx” (http://www.gnu.org/software/hp2xx/hp2xx.html). Windows version available here: http://gnuwin32.sourceforge.net/packages/hp2xx.htm
If you are running a Windows server, we recommend you to install ImageMagick to a path without space characters (like “Program Files”). You can install it for example to a path like “C:/ImageMagick”.
For ImageMagick to be able to generate thumbnails for PDF documents you will also need to install Ghostscript (http://www.ghostscript.com/download/gsdnld.html).
Setting up Web File Share
To enable ImageMagick please follow these steps:
Login as superuser (default username “admin”).
Open “Control Panel”.
Go to “System configuration” » “File preview and thumbnails”.
Set path to ImageMagick “convert” binary.
Example of valid paths:
Windows servers: C:/ImageMagick/convert.exe Windows servers: C:/"Program Files"/ImageMagick/convert.exe Linux servers: /usr/bin/convert
If you see broken icons instead of thumbnails:
Make sure ImageMagick is working, running the following command: convert logo: image.jpg
Make sure that Ghostscript is working. Try converting a PDF document using the command line: convert example.pdf example.png
Make sure the path to ImageMagick is correctly configured in Web File Share's control panel.
On Windows servers, make sure PHP can run external application. You need to give the Internet Guest User (IUSR_<your-computer-name>) “read & execute” permission on the file that PHP is trying to run ImageMagick trough. That would be “cmd.exe” (located usually inside the folder “C:/Windows/System32”), the file used for running programs trough the command line.