Working with not entirely modest images

Hello Ophir. I think that if you yourself upload it to the site – there is a reason to ban it (although this is a bit of a stretch, as the internet is full of much worse images for those who are looking for them. The problem is with those who are only looking for a gym and will come across this unwillingly). But if you build the platform and teach him to upload things to the site or promote the site, it is permissible, since he does what he decides based on his own considerations. This is not a site whose purpose is explicitly prohibited, like a pornography site or something like that, where there would be room for prohibiting even indirect assistance (although if you don’t do it, others will). Here you are assisting a legitimate site and it is his decision what to do with it.