Configuration/Core/controller/extjs/media/default/files/allowedtypes

Summary
A list of image mime types that are allowed for uploaded image files

controller/extjs/media/default/files/allowedtypes = Array (   [0] => image/jpeg    [1] => image/png    [2] => image/gif )


 * Default: Array
 * Type: array - List of image mime types
 * Since: 2014.03

Description
The list of allowed image types must be explicitly configured for the uploaded image files. Trying to upload and store an image file not available in the list of allowed mime types will result in an exception.