What is the difference between image size (pixels) and image resolution (dpi)?
You can change the number of pixels in an image (and thus the size of the file), in the Resize dialog. When you reduce the size of an image you change its dimensions, i.e. you reduce the number of pixels in the horizontal and vertical rows and columns, not the dpi. If you reduce the image quality when you choose Save as > Advanced, you are actually combining similar colors into one color, which allows for better image compression. Again, you are not changing the dpi. The dpi value is embedded in the image, determined by the camera or the scanner with which the image was created. It is only relevant for the printer or beamer. Note: The bigger the image (pixels), and the better the resolution of your printer (dpi), the higher the quality of your printed image. There’s an Info button in CodedColor’s Print dialog, which indicates your printer’s specs.
