1. A method comprising using at least one hardware processor to: receive one or more content items, wherein at least one of the one or more content items comprises an image; retrieve data from a plurality of metadata sources; generate a visual depiction of metadata for at least one of the one or more content items based on the retrieved data; and generate a composite content item comprising a single image file that combines at least a portion of each of the one or more content items, including at least a portion of the image of the at least one content item, with the visual depiction of the metadata.