# 'mediagoblin.media_types.image.processing'?
"sniff_handler": sniff_handler,
"display_template": "mediagoblin/media_displays/image.html",
- "default_thumb": "images/media_thumbs/image.jpg",
+ "default_thumb": "images/media_thumbs/image.png",
"accepted_extensions": ["jpg", "jpeg", "png", "gif", "tiff"]}