Hi Henry,
Sorry for the late response. In fact, I want a margin of 20 mm around the text box. In addition, playing with the options weight = and height = some images are distorted, including the one that I join.
Thank you
Fabrice[...]
\setupfooter[margin][strut=no]
\setupfootertexts
[margin]
[]
[{\externalfigure[logo.png][height=]}]
[]
[{\externalfigure[logo.png][height=]}]