Upon request of MEP Julia Reda, this study evaluates the provisions of the European Commission’s Proposal of 14 September 2016 for a Directive on Copyright in the Digital Single Market that are relevant to ‘information society service providers that store and provide to the public access to large amounts of works or other subject matter uploaded by their users’. It concludes that key elements of these provisions are incompatible with existing EU law, including the Charter of Fundamental Rights of the European Union. The provisions ought therefore to be withdrawn or amended. For the purposes of the latter option, the study provides a series of recommendations.