tˈæɡz kæn biː stˈoːɹd ɛkstˈɜːnəli, ɔːɹ ɪn ˈɪndʌstɹistˈændɚd ˈɪptk ɔːɹ ˌɛksˌɛmpˈiː hˈɛdɚz ɪnsˈaɪd ˈiːtʃ ˈɪmɪdʒ fˈaɪl ɔːɹ ɪn sˈaɪdkɑːɹ fˈaɪlz.
Tags can be stored externally, or in industry-standard IPTC or XMP headers inside each image file or in sidecar files.