A tool for checking your viewport and screen size in pixels.
Viewport dimensions are the width and height of the web browser area where the web page is displayed.
Screen dimensions are the total width and height in pixels of your device screen.
Device Pixel Ratio (DPR) is the number of physical pixels that make up one CSS pixel in each dimension. For example: A DPR of 2.00
would make one CSS pixel take up 4 physical pixels (2x2).