Did you know that you don’t need to worry about creating thumbnails for your images or other documents yourself? All you need is the DOCman Thumbs plugin, which does all the work for you. It’s part of the DOCman Productivity Pack. This video shows how easy it is:
Watch the DOCman Thumbs 1.5 video.
If you want to start over (for example after changing the thumbnail size), you’ll need to clear out the thumbnails.
By default, most server setups have the GD library installed. This will work fine for standard images such as png and jpg. But if you want thumbnails for larger files, pdf’s, movies, and range of other documents, you’ll need to install some libraries, such imagick and ghostscript. If you are not familiar with installing libraries on your server, please ask your system administrator for help. To find out what is already available on your server, go to Help -> System Info -> PHP Information.