[@drvajra] your goal is impossible to automate and have useful function otherwise.
For example, browse any web encyclopedia, dictionary, or the top few world renown professional credentialed news journalist organizations, and on all of them you will find neutral reporting of many things you might want your children to only have access to under careful chaperoning and contextual explanation from you.
Also, think “breast cancer awareness” and “breast reduction surgery for health”, which are probably valuable arenas for education and awareness, versus “big breasted women” porn sites, which may not necessarily be harmful, though brutally objectifying and titillating, so to speak — can you teach your children what objectification looks like, so they are prepared to recognize it and reject it immediately and vociferously?
I remember as a child walking down the street of a nearby town and passing an art gallery on the left that had paintings of naked women in the window, and my mom said “… eyes right …” as we passed.
Whatchya gonna do?
.