Imperialism in Conrad's Heart of Darkness is one of the chief focal aspects of critical controversy and debate in the fields of literary theory and literary criticism. The aim of the study is to examine the ideological background to viewing Conrad as anti-imperialist in ‘Heart of Darkness’, while dealing also with the presentation of imperialism and racism. The study reveals that Conrad was consciously anti-imperialist but he unconsciously or carelessly employed racist terminology. The novel is a moving record of White imperialism in the Belgian Congo and of the intense suffering of the Africans. It conveys Conrad's nihilistic impression of the Whites who exercised unpardonable authority over natives. As Conrad sets up Africa as a foil to Europe and a place of negation and cannibalism, many contemporary critics viewed the text as a racist work. But in writing about the diabolical practice of White imperialism in Africa, can Conrad be seen as an extremist in terms of racism? Does he support the dehumanization of natives which is practiced by the Whites in the name of a civilizing role? The study scrupulously examines these controversial elements in the text and concludes that Conrad's impressionistic narrative technique, incorporating a pessimistic viewpoint, along with his disillusioned emotions over what seems to be White cannibalism in the Congo, and the excessively grim nature of the novel Heart of Darkness, all serve Conrad's anti-imperialistic perspective effectively. Conrad's anti-imperialistic ideology employed in Heart of Darkness provides then a tremendous attack on inhuman, brutalized White imperialism. The absence of joys, success and optimism that strengthen the impression of extreme negation throughout the novel is evidence of Conrad's deeply anti-imperialistic perspective.