In Indesign in the Links menu it's quite easy to see the actual/effective PPI of a linked image. It just says the actual PPI number.
However in Illustrator, it says, for example, 143x166. And I'm not quite sure what this means. How do I calculate the actual PPI from that?
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Has the image been rotated?
If not, then this tells you that the image has been scaled unproportionally.
They have been rotated, yes!
Okay so I see that if I rotate it suddenly changes from 300 PPI to '175x513'. Isn't there a way to keep this displaying the PPI size? Or why is it changing the number in the first place? Indesign doesn't do this, as far as I'm aware. Very confusing.