When checking data in “View page info / media” it include several file which it has file size is different.
Background file is background image file of web element and icon logo.
Icon is logo of website.
Image map (on map display) is image map at map display which it is divide both size.
Image map (Map reference) is image map at lower right of map display for reference map.
Icon location layer is layer of interest location with name.
In Media tab of View Page Info. We can see many images and URL of an image. Moreover, we can copy URL to open in new web browser. (10 left) Besides, we can change size of images wherewith modify URL:
For example on WIDTH=256&HEIGHT=256 modify to WIDTH=500&HEIGHT=500. In the result is different size of images