PNG (top), JPEG (bottom)
The first image is an progressive JPEG image and the second one is saved as an interlaced PNG image. With this feature it seems like they're downloaded faster than they actually are.
When the page first comes up it's not really clear but then the pixels become sharp and the pictures became clearer.
When the page first comes up it's not really clear but then the pixels become sharp and the pictures became clearer.
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