What is the ruling on creating a website that provides tools to improve the visibility of other websites in search engines, knowing that it does not contain anything that violates Islamic law, but some may use it to promote content such as films and TV series? Does sin befall the owner of the website in this case?

There is no harm in creating a website to improve the visibility of websites on the Google search engine, provided that these websites are beneficial and do not promote vice or spread evil. It is necessary to be diligent in accepting websites and to set clear standards and conditions for this, and to ban those who violate them, in accordance with the Almighty's saying: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression).