Definition: Resolution is the term used to describe the number of dots, or pixels, used to display an image.
Higher resolutions mean that more pixels are used to create the image, resulting in a crisper, cleaner image.
The display, or resolution
on a monitor, is composed of thousands of pixels or dots. This display
is indicated by a number combination, such as 800 x 600. This indicates
that there are 800 dots horizontally across the monitor, by 600 lines
of dots vertically, equaling 480,000 dots that make up the image you
see on the screen.
PPI (Pixels per Inch) and DPI (Dots per Inch) are frequently
used interchangeably in the photo industry. Scanners, digital cameras and screens
are all measured in PPI while PRINTERS are measured in DPI. Just so you know the
difference.
When you are uploading your 12x12 page, it is crucial that you upload the correct resolution so that we can print the best of our ability! A 12x12 image would need 3600x3600 ppi or dpi (whatever term you want to use).
More answers can be found HERE.
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