I have two images with the same dimensions. One is a facebook icon and the other is a plain white image. They are 32 bit, 128 pixels by 128 pixels, 96 pixels per inch and 3.39 cm but one is 1.87kb and the other is 50kb. Both are png format.
I want the second image to be as small as the first one but even with compression, the least size I can get is 3kb. I have tried removing other details like dates, orientation to achieve the smallest size but sometimes the size even gets a little bigger.
Why is it that these images are of different sizes on disk yet they have the same properties and attributes?
How can I make my image as small as the first one?