Image Properties
• You can view the following properties of an image by Image > Image Properties
◇ Size in pixels
◇ Print size
◇ Resolution in PPI
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Image Size (px)
• You can view the image size (in pixels) from the title bar e.g. 1920 x 1080 etc.
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Image Resolution (ppi)
• You can set PPI when you create a file (File > New) or use Image > Scale Image
• In terms of displaying image on screen or displaying it for web, there is no difference between using 72 ppi or 30 ppi
• Set resolution to 72 ppi for digital display
• Set resolution to 300 for printing
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Print vs. Digital
• The difference in ppi lies in the printing size. The larger the ppi, the larger the size can be printed
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Interpolation
• Anytime you enlarge or shrink an image, GIMP will fill in the missing pixels or just change the structure of the pixels via a method called interpolation
• As no new details is added in the interpolation process, there will be quality loss when it comes to scaling an image
Index