I was designing an advertisement for my client that was going to be published in a newspaper.
Me: Your logo is too low res and quite pixilated. Could you send me the high res version? It will be larger than the one you just sent me.
They send me the same jpg, but stretched to fill the screen.
Me: No no, I need a higher quality image, like the eps file or something similar.
Client: Oh, why didn’t you say so?
They send me the same file, but with .eps added after the jpg extension.