Relation between ppi and screen(icon) size? [closed]

1. How is PPI related to the resolution of the display?
2. Do pixels depend on screen size?
3. Is 150 PPI good for screen?
4. Is 72 PPI the same as 300 DPI?

How is PPI related to the resolution of the display?

Image resolution is typically described in PPI, which refers to how many pixels are displayed per inch of an image. Higher resolutions mean that there more pixels per inch (PPI), resulting in more pixel information and creating a high-quality, crisp image.

Do pixels depend on screen size?

A screen's size and resolution also affect its pixel density, which means how many pixels there are per inch of screen space, and having a higher pixel density can help improve text clarity, which you can read about here.

Is 150 PPI good for screen?

You should be able to get great results as long as the images are at least 150 ppi at 100% size. Typically, the further the viewing distance is, the lower the image resolution needs to be. A billboard is typically printed at 10 ppi to 30 ppi.

Is 72 PPI the same as 300 DPI?

So the answer is yes, albeit a very small one, but some of the other answers have missed it. You're right that the only difference is in the metadata: if you save the same image as 300dpi and 72dpi the pixels are exactly the same, only the EXIF data embedded in the image file is different.