Two images with same resolution (nb of pixels width and height) but with a ration of 2:1 in DPI one will display two times bigger than the other ?

  • 1
    'None of the above': it's the size that's important. Can you tell us a bit more about your images: not all programs correctly set the physical size for e.g. .png files.
    – Joseph Wright
    Mar 30, 2014 at 17:02
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1 Answer 1


The graphics package does indeed use the natural size of images (eps and pdf files do not have a pixel size). You can manually override the size to either a set size or to a given scale. Using the DPI stored in the png obviously requires the DPI to be correctly set on the image.

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