Converting a PDF document into a TNS file is a highly specialized task, primarily required by students, educators, and engineers who use Texas Instruments (TI) graphing calculators. TNS is the proprietary file format used by the TI-Nspire ecosystem, including TI-Nspire CX, CX II, and CAS handhelds, as well as the TI-Nspire CX Student Software.

Texas Instruments provides official software that lets you manually build .tns files on your computer.