Disable Automatic Resizing in Firefox
The latest versions of Firefox are automatically resizing images if they do not fit the screen which is a feature that is not wanted by some users. If you are one of those users who would like to change the default behavior and always view images in their original size in Firefox you have to change a setting in the options.
The easiest way to access this option is to type “about:config” in the address bar and search for the string “browser.enable_automatic_image_resizing” which handles how Firefox processes images that do not fit the browser screen. The setting is set to true by default which means that Firefox will resize images automatically if the image is to large to fit the screen.
Change that option to false to override it. This has the consequence that Firefox will never attempt to automatically resize an image so that it fits on the screen.
