Is money earned from shortening links to pornographic films or episodes, knowing that I do not upload the content myself but rather place a link to another site that does, unlawful (haram)?

If the films are free of Sharia-prohibited elements, then it is permissible to earn money from shortening their links. However, if they contain objectionable elements (munkarat), then it is not permissible to publish their links or to earn money from them, due to the fact that this constitutes guiding towards evil and cooperating in sin.