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This article will explain in detail what dpi means. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

300dpi refers to 300pixel units in an area of one inch; dpi refers to the number of pixels per unit area, that is, scanning accuracy; at present, internationally, it is calculated the number of pixels in an inch area. The smaller the dpi, the lower the definition of the scan. Due to the impact of network transmission speed, the images used on web are all 72dpi.

Dpi refers to the number of pixels per unit area, that is, the scanning accuracy.

At present, the number of pixels in an inch area is calculated internationally. The smaller the dpi, the lower the definition of the scan. Due to the influence of the network transmission speed, the images used on the web are all 72dpi, but this parameter cannot be used to develop photos. It must be 300dpi or higher 350dpi. For example, to develop a 4'6 inch photo, the scanning accuracy must be 300, then the file size should be (4 '300) * (6' 300) = 1200 pixels * 1800 pixels.

Extended data:

DPI was originally a unit of measurement in printing, meaning the number of dots per inch that can be printed (Dot Per Inch). However, with the rapid development of digital input and output equipment, most people also express the resolution of digital images with DPI, but more rigorous people may notice that the dot (Dot) calculated when printing and the display pixels (Pixel) of computer monitors are not the same, so more professionals will use PPI (Pixel Per Inch) to express the resolution of digital images to distinguish between the two.

We usually refer to the printer resolution DPI, which refers to the maximum number of ink dots per inch that can be printed in the printer's highest resolution mode.

This is the end of the article on "what does dpi mean?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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