A user of a computing device may view a content page on a display of a computing device. One aspect of the disclosure is a browser user interface than enables the user to flip the content page (or portion thereof) over (e.g., via a touchscreen gesture) to view supplemental content, such as metadata, associated with the content page (or portion thereof). While viewing the metadata on the back side of the content page in some embodiments, the user can perform a second or reverse flip operation to return to the original page. The user may be presented with options to flip the page backward and forward multiple times to view multiple flipped pages presenting additional supplemental content. The supplemental content may include virtually any information in which the user may be interested and/or that is related or similar to the content page.