In my experience, scaling down an image makes it look sharper. A blurry image will often look perfectly fine when sufficiently scaled down; which is not surpris

In my experience, scaling down an image makes it look sharper. A blurry image will often look perfectly fine when sufficiently scaled down; which is not surprising, because a blur with a five-pixel radius at camera size can easily become a fraction of a pixel at web size. Similarly, scaling down counteracts camera noise, because each output pixel averages out the noise between several different sensor pixels. Of course, you can always make them even sharper with filters if you want.