Why does Photoshop resize my images?
When you set the pixel dimensions and the resolution, Photoshop creates a different physical size. The image holds the number of pixels in the image and number of pixels per inch you specified. The files size changes because you are changing the total number of pixels in the image and the number of pixels in each inch.
What is resize graphics?
The act of changing the dimensions of an object in a graphical environment. For example, in a graphical user interface, a user may resize their window to allow them to view other windows on their screen, or help arrange windows. To resize a window, move the cursor to the edge or corner of the window.