tera4d• Select the Buy Now button to go to the Tetra4D web store to purchase licenses of the Tetra4D Converter. • Select the Continue Trial button to run in trial mode. The Tetra4D Converter willTetra4D® Converter . The world’s leading solution for converting. native 3D CAD data into rich 3D PDF documents. Tetra4D Converter is the world’s leading solution for converting native 3D