Resolution - also known as DPI (Dots per Inch for printer) or PPI (Pixels per Inch for the screen). is the number of dots that fit horizontally and vertically into a one-inch space.
Generally, the more dots per inch, the more details captured and the sharper the resulting image.
Note: DPI is not = PPI.
SCREEN PPI vs PRINT DPI
The terms Dots Per Inch (DPI) and Pixels Per Inch (PPI) are commonly used interchangeably to describe the resolution of an image.
However, the terms do not mean the same thing and there are distinct differences between the two:
DPI refers to the number of printed dots contained within one inch of an image printed by a printer.
PPI refers to the number of pixels contained within one inch of an image displayed on a computer monitor.
DOWNLOADING IMAGE FROM INTERNET
How to choose the right resolution image file from the internet for your artwork?
If you are searching on the internet for an image to be placed in a 2-inch x 4-inch space of your artwork. You will need to find an image size of at least 600 x 1200 dpi.
(Note: 2 inch x 300 dpi = 600 dpi)
RECOMMENDED ARTWORK SIZE FOR PRINTING
Check with the table below to see if your artwork or images is ready for a good printout.