The only ind to jpg conversion that comes to mind, is export of Adobe InDesign documents or some of their parts as JPEG pictures. This particular export is only doable with InDesign and its various document formats are rarely supported in 3rd party apps.
Many different .ind file types exists though, so perhaps a different kind of ind to jpg export is doable, but as far as we can tell, no other file types in our database contain graphics data.
Updated: August 28, 2023