How to change snap UV grid I'm trying to snap UV into little units.
Even if I did mange to change the grid size and snap correctfully in Modeling window,

I cannot find a way to do the same in the UV Edit window (even by pressing Shift, the snap is too wide)
Oops no, @3fingeredfrog was right :
In order to snap correctly to pixels you have to choose the Snap to Pixel option but ALSO have to UNCHECK the snap magnet tool into the main toolbar, or else this will be the main snap overriding the snap pixel option.

Thanks again