In one embodiment, a computer-implemented method for editing navigation of a content item is disclosed. The method may include presenting, via a user interface at a client computing device, time-synchronized text pertaining to the content item; receiving an input of a tag for the time-synchronized text of the content item; storing the tag associated with the time-synchronized text of the content item; and responsive to receiving a request to play the content item: playing the content item via a media player presented in the user interface, and concurrently presenting the time-synchronized text and the tag as a graphical user element in the user interface.