No legitimate software can intelligently convert a scanned PDF of a parabola into an interactive TI-Nspire graph. Optical Character Recognition (OCR) works for text, but Math OCR (converting handwritten or printed math into digital calculator syntax) is extremely complex and not commercially available for TNS format.
You cannot simply click "Save As" on a PDF and get a functioning TNS file. A PDF is a static snapshot of a page (like a photograph). A TNS file expects dynamic, interactive math objects. pdf to tns file converter
For educators: Consider saving your worksheets as plain text or LaTeX alongside PDFs so students can more easily transfer the data to their TI-Nspire devices. No legitimate software can intelligently convert a scanned