An online tool in digital humanities for the analysis of textual transformations between source texts and target texts in the production of literary narratives in pre-modern China (ca. 13th-18th centuries), in the context of the diglossic situation of Chinese between classical and vernacular languages. IntraTexTT is used for the analysis, statistical reporting, online publishing and sharing of data related to situations in which textual production was operated via intertextual transformations, such as rewriting and intralingual translation.