Converting Page object to JPG/PNG image

I want to do a picture i page or keynote. create a logotype by exempel. Then I want to create an image of it to use in other drawings or on my webside. Today I create the logotype in page and it works fine an grop it as an object. Then I want to save och export just that object as an image (jpg/png) but I cant find a way to do that. Today i copy the object an past it in to Power Point and there I can save the object as an image. Than I can taket thet image into pagen agin and use it as an image.

[Re-Titled by Moderator]