Image Resolution for Printing Photos
The best file for printing is the original, full-resolution image, not a screenshot or a copy downloaded from social media. The number that matters most is its pixel dimensions, such as 4000 × 3000 pixels. Those pixels are spread across the final print size, which determines the effective pixels per inch (PPI) and how much fine detail can be reproduced. The Quick Answer Around 300 PPI is a useful target for a detailed photo print viewed up close. Lower effective resolution can still look good at larger sizes viewed from...
Read more...