Description

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This site provides a screen size online detection tool, which can detect screen size, screen width and height, pixel density devicePixelRatio, and provide a complete collection of mainstream mobile phone screen sizes, currently including: iPhone, Huawei, Google, Samsung and other mobile phone screens Size. Provide designers with reference to mobile web page size design specifications.

What does DPI/PPI mean?

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In the context of a screen, DPI (dots per inch) or PPI (pixels per inch) refers to the number of pixels per inch of a device, also known as "pixel density". The higher the number, the greater the size of the pixel Small, so the image looks sharper and less pixelated. The concept of DPI is also used in printing, although the dots there and how they are formed are different. Generally, high-quality prints use about 300dpi, which is higher than large Most monitors. That's why vector or high resolution bitmap based graphics often look sharper when printed.

Higher DPI = sharper image?

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DPI/PPI is a key metric for understanding how sharp a display really is, but it's just one of many factors. In addition to the technical side (which would take a whole book), there are some that depend on human nature.

First, the viewing distance affects the perceived pixel size. So if the phone and the larger screen have the same pixel density, the larger screen will appear sharper because it is usually viewed from a greater distance. This is why Big screens can get away with a fairly low pixel density. In the print world, that's why posters are printed at a much lower dpi than magazines.