According to one embodiment, a content summarizing apparatus includes a selection unit, a record unit, and a storage unit. The selection unit selects at least one image from input content in accordance with at least one selection criterion and at least one parameter corresponding to the at least one selection criterion, and to produce a summary. The record unit cause the storage unit to store a summary record information item that includes the at least one selection criterion and the at least one parameter used by the selection unit. The storage unit stores the summary record information item whenever the summary of the input content is produced. The selection unit acquires past summary record information items from the storage unit, and produces the summary using the at least one selection criterion and the at least one parameter that fails to be included in the past summary record information items.