When using the local playlist to define the slideshow (no XML), the application will guess the type of each item to display using the protocol and file extension. If not correctly detected, the default behaviour is to display the item as a web page. To override this behaviour, you can associate filename extensions with display types.
The known types are:
The association is done in the main configuration file (/etc/xdg/webkiosk/preferences), in a [slideshow-types] section. For exemple:
[slideshow-types] iso = video flv = video gif = image