On Mon, 2013-04-08 at 18:00 +0200, Víctor Fernández wrote: > Hello. I'm developing an application for desktop which consist on > digital treatment of images. The idea is not to open the terminal to > launch the program, but there's a little problem: I don't know how > Nautilus know that .jpg (or .png) files can be opened with my program, > and what can I do to get this. Install a desktop file for your application, and add a MimeType= line to it, listing the mimetypes your application can handle. See /usr/share/applications/gimp.desktop for inspiration -- desktop mailing list desktop@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/desktop