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I am looking at image file formats and I would like to know which one of png, gif, jpeg, bmp, and tiff is the most efficient in terms of loading and displaying the image data. I don’t care so much about the file size on disk, just the amount of CPU needed to display the images on an embedded device like Android, iPhone, or a Windows Phone.
I imagine an uncompressed format would be the most efficient from a processing perspective, since you don’t need any processing to decompress it. But you pay the cost of having a larger file size. BMP and TIFFs are the two uncompressed formats in the list of choices you gave.