Introduction. The environment in which organisations operate has changed dramatically in recent years. Cases of corruption, unethical practices and the economic crisis have led to a new complex landscape in which institutions must rebuild the lost trust. The objective of this work is to demonstrate how museums are committed to transparency to showcase themselves as reliable organisations that fulfil their social purpose. Methods. This study is based on the content analysis of the websites of a sample of museums in order to determine whether these channels meet the transparency requirements proposed by the report of the Commitment and Transparency Foundation. Results and conclusions. Like other types of organisations, museums use their corporate websites as transparent platforms, where they meet a series of criteria that increase the public's trust and provide information of interest to society.