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All images are at least 300 DPI
The images in the file must be at least 300 DPI. The abbreviation DPI stands for Dots Per Inch, or Dots Per square Inch. The resolution and quality of the printed image can be guaranteed using 300 DPI.
How much DPI does my image have?
You can find out by clicking on the image. Information about the image, including the DPI of the file, will now appear in the top left-hand corner of the worksheet.