Nautilus Columns is a Nautilus file manager Python extension that adds metadata tags in the Nautilus list view, for audio (mp3, flac and wav), image and PDF files. These metadata tags added by the Nautilus Columns extension are not only useful for a quickly look at some particular audio, pdf or image information from the Nautilus list view, but also to sort some files by a particular metadata tag column to easily identify the files you’re looking for.