I tried this site to change the dpi of an image, but it didn't really change anything, based on the size of the image and the image properties displayed when I opened the "converted" image in IrfanView (and the fact that kdp still complained about it being a 73 dpi image).

Here's the image.

enter image description here

  • 3
    $\begingroup$ I don't get what you are trying to achieve. dpi stands for 'dots per inch'. Or with other words pixels per inch... But the image formats don't store a size with respect to area. Or am I completely wrong? $\endgroup$
    – Thomas
    Nov 12 at 17:47
  • $\begingroup$ Well, I'm not sure myself, but kdp said the dpi at 73 was too small, and suggested a dpi of 300. $\endgroup$ Nov 13 at 5:53
  • $\begingroup$ DPI is also used in the context of printing and scanning images. For an image that is 1024x1024 texels at 300 dpi it would print to about 3.4 inches. For comparison a 27 in 4k monitor has a dpi of about 170. For high quality 11.5 inch prints images should be about 3500x3500 texels in size. $\endgroup$
    – pmw1234
    Nov 14 at 11:31


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