With Facebook Banner Generator you easily create a banner visible on the top of your facebook profile page.
You choose the picture and the desired frame. Then Facebook Banner Generator automatically creates the mosaic pictures and uploads them to to your facebook profile.
COMMENT TO THE "LACK OF HD" REVIEW: This app doesn't up- or downscale the source image in any way. It just cuts the source image into five pieces and uploads them without any further processing to facebook. So the result has the best achievable image quality possible from the source image. The individual pieces won't have "HD" resolution, because each of them can only have at most a fifth of source image resolution. Complaining about that is like complaining about that dividing a cake into five pieces won't result in five fully sized cakes.