Used by TunerStudio MS (automotive ECU tuning software). These are proprietary log or project files. No free converter exists from PDF.
: Offers an online platform where you can upload a PDF and export it to several formats, including TNS. It is especially useful for basic editing and signing before conversion. TNSFileConverter (GitHub) pdf to tns converter free top
The Best Free PDF to TNS Converters: A Complete Guide for TI-Nspire Users Used by TunerStudio MS (automotive ECU tuning software)
: You can import text or images into a new document and save it directly as a .tns file. pdf to tns converter free top
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Upload those JPGs to a community TNS image converter.