DWF AutoSave saves the copy of the  Autodesk® Inventor®  drawing automatically to DWF(x) during save command. The file is saved in the same folder as the original drawing with the same file name. 

Note! This version works with Inventor 2025->.

See detailed information here, https://meksystems.fi/wp/autodesk-apps/dwf-autosave/

Note! DWF AutoSave works only when drawing is saved after modification. So it does not make a DWF(x) if drawing has not changed.