Vector vs Jpeg
Not All Files are the same
From time to time we get “vector” files with a “raster” graphic placed inside. Just because a file is .ai, .eps, etc., does not mean it is a vector-graphic. The easiest way to tell a vector from raster graphic is to simply zoom in.
Once you have your file open, zoom in and if the file stays nice and crisp around the edges it is most likely perfect, if they start to pixelate then the file is raster or Jpeg and we would need to see the file to determine the usability.
You zoomed in and you have a raster file? No problem, often times we can still use them. To use a raster file preferably it is to the size it needs to be printed, and at 300dpi.
Dimensions That Work
Ideally you’ll get a file that is to size and 300dpi. But the real world is not ideal. There are many Jpeg files we can work with.
There are many instances when a Jpeg file can be used, but we still prefer vector, and the more files you open the more you will start to see what will work and what won’t.