Design Your Touchscreen Interfaces in Photoshop in True Life Size
When you’re designing a touchscreen interface in Photoshop, what you see onscreen is often a very different size than the way it will actually appear on the touchscreen display. This is problematic when you’re trying to size and space all the elements of a user-friendly interface. Fortunately, there is a way to preview your design in the true size of your target display.
Photoshop has a “Print Size” command in the view menu. This not only allows you to view the canvas onscreen at the actual size it would print, it’s also great for viewing the canvas at the actual size of your target touchscreen.
To do this, you first need to tell Photoshop the dpi (dots per inch) of your computer display. Mine, for example, is 113.21. You can figure out yours with this handy dpi calculator or the following formula:
dpi = sqrt (width_pixels^2 + height_pixels^2) / diagonal_inches
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