This is what it looks like when graphics cry (blur)
I did this by mistake, I thought 1 or 2 here would like to see what we often talk/fuss about, yet with very little actual examples of it:
For those who ever wonder how it looked when an image is not the right size ex: (odd number, not a multiple of 2).
On the left, this is a perfect example of the blurriness, AKA aliasing, you can get when disregarding the "divisible by 4 recommendation", (thank you @Socks
Both vertical line were completely sharp before export.
Due to odd sizing, the line on the left ends up in between pixels and so is aliased.
As opposed to the right line, which is the way it should look when an image falls right on a physical pixel.