Convert THUMBDATA3 to JPEG

As far as we know, there is really no way how you could get a JPEG picture out a THUMBDATA3 file, which is what thumbdata3 to jpeg conversion represents.

These files are just used as placeholder for cache that contains thumbnail data for a picture that exist, or once existed in Android device. The reason why exporting of graphics content is pretty much impossible is that a .thumbdata3 file contains data from ALL pictures, not just single one, so the data is most likely corrupted for recovery purposes.

Simply put, it is impossible to convert THUMBDATA3 to JPEG directly.
Thus, there is no so-called thumbdata3 to jpeg converter or a free online thumbdata3 to jpeg converter to be found.