The ImgGpsEditor ImgGpsEditor editor edit the GPS coordinates of images, as in the figure:
If the image does not have a GPS coordinate, you can manually left table or by dragging the icon in the picture on the right:
On this screen, you have the menus:
After editing the coordinates, you should apply the changes by clicking the Save Coordinates button.
It is also possible to generate a KMZ file with the selected images, which will later be viewed in Google Earth.
This plugin is under development and any suggestions are welcome!