Hi,
All the staff of Nintandbox are french, so it's normal the site is in french (we try to answers in english, for people who don't speak french, but it isn't easy for me....)
In France, lot of people only collect game with french box, I think american do the same with american box.... So it's normal most of our boxes are french.
For the english boxes, we don't create them, we only propose boxes scanned by people, we accept all boxes, labels and manuals with good quality, on all laguages. If you have some, don't hesitate to propose them (or if you know people how have them)....