Currently loaders determine the content type of image files by analysing their filename's extension. On *NIX, MIME type is usually prefered. Thus, on such systems, GEGL, and especially gegl:load, should probably implement a MIME type based detection mechanism.

Moreover, a datarui describe its content by declaring a MIME type (whatever the platform). MIME type analysis would thus improve datauri loading. From operations/common/load.c:

>
>// XXX: maybe file loader opts should register mimetypes also?
>