cSys Pdf AutoSave
PDF AutoSave saves the copy of the Autodesk® Inventor® drawing automatically to PDF during Save command. The file is saved in the same folder as the original drawing with the same file name.
See detailed information here: www.codesystems.fi/products/?product=cSysPdfAutoSave
Note! PDF AutoSave works only when drawing is saved after modification. So it does not make a PDF if drawing has not changed.