To use the text-to-speech tools, the documents must in an electronic form, that is uploaded as the digital format.
tə jˈuːz ðə tˈɛksttəspˈiːtʃ tˈuːlz, ðə dˈɑːkjuːmənts mˈʌst ɪn ɐn ᵻlɛktɹˈɑːnɪk fˈɔːɹm, ðæt ɪz ˈʌploʊdᵻd æz ðə dˈɪdʒɪɾəl fˈɔːɹmæt.