Hi-res images are at least 300 pixels per inch (ppi). This resolution makes for good print quality, and is pretty much a requirement for anything that you want hard copies of, especially to represent your brand or other important printed materials.

PPI (Pixels Per Inch) refers display resolution, or, how many individual pixels are displayed in one inch of a digital image. DPI (Dots Per Inch) refers to printer resolution, or, the number of dots of ink on a printed image.

There Is No One Answer to Pixels per Inch However, pixels are different sizes on different displays, so the answer is 58.74 pixels per inch on a 75-inch 4K television, for example, but 440.58 pixels per inch on a 5″-inch full HD smartphone screen.

Calculating PPI The basic equation for calculating PPI is: PPI = width(pixels)/ width of image (inches); PPI = height(pixels)/ height of image (inches).

a 20 inch 1680×1050 pixel LCD screen shows it as 5 inches wide. a 23 inch 1920×1080 pixel LCD screen (110% text size) shows it as 5.75 inches wide. a 19 inch 1280×960 pixel CRT screen shows this image as 5.6 inches wide. a 17 inch 1024×768 pixel CRT monitor shows it 6.0 inches wide.

The pixel dimensions may be determined by multiplying both the width and the height by the dpi. A digital camera will also have pixel dimensions, expressed as the number of pixels horizontally and vertically that define its resolution (e.g., 2,048 by 3,072).

Pixel Count Quick Reference Chart

An image with a higher PPI tends to be higher quality because it has a greater pixel density, but exporting at 300 PPI is generally considered industry standard quality. Because increasing the PPI increases the size of your file, you will want to use a high PPI only when necessary.

300 PPI is the ideal printing resolution for quality Designing a file in lower than 300 PPI will lead to blurriness and pixellation. On the other hand, there is no point in designing at higher than 300 PPI. As far as the eye can tell, there will be no difference in print quality.