Centers the image on the page when a image file is viewed in Chrome.
When you open an image file in Chrome, the browser displays the image in the top-left corner of the screen by default. This extension simply makes the browser display the image in the center of the screen so that you do not have to redirect your focus to view it.
An example before/after is shown in the screenshots. Or to demonstrate the effect yourself, open the image at the below link with and without the extension enabled.
This extension works on files with urls that end with common image file extensions such as .png, .jpeg, .gif. It does not affect .html files.