The two ps opened are not the same size?

The size of the picture is not the size of the picture you see on the screen with the picture viewer attached to your computer. Is the actual size of the picture. The computer comes with a picture viewer, and the pictures you see are all with windows.

The most common picture is a bitmap.

Bitmaps are made up of many small pixels. When the picture is enlarged to a certain extent, there will be small squares, that is, pixels.

The size of the bitmap image is determined by.

The resolution of this picture is pixels per inch. As the name implies, there are many pixels per inch of area. For example: 72 pixels/inch

There is also the width and height of the picture, usually expressed in pixels or millimeters. For example, the most common 320*240 pixels.

The size of the picture is determined by the above two sets of parameters.

Either you look at how old he is, or you look at how old he is. The picture can be enlarged and reduced.

The resolution of the display also matters. Resolution is smaller than the picture, resolution is smaller than the picture.

This is related to the imaging principle of the display.

I wrote it all myself, not ctrl+v.