This is a simple form to view any URL in Google Web Light's low-bandwidth view. Since the old Google mobilizer is no longer available, it forwards all urls of the format http://google.com/gwt/x?u=[URL] into a URL of the format https://googleweblight.com/?lite_url=[URL]&f=1 This form will stick your URL into Google Web Light with the f=1 parameter added, which causes Google Web Light to replicate the old mobile optimized view as closely as possible.