: If your CDX file is a Visual FoxPro Index , it is a "Compound Index File" used for databases. This type of file contains code and data pointers, not visual information, and cannot be converted into an image format like JPG.
Several free and open-source tools can open CDX files and export to JPG. convert cdx to jpg
Remember: JPG is a , not an archive format. Keep your original CDX files safe, and convert a copy to JPG only when you need to share or publish. : If your CDX file is a Visual
Open Babel can convert CDX to SVG (vector), then ImageMagick converts SVG to JPG. not visual information