LA-WEB 2019 is the 10th of a series of refereed international conferences that aim to provide a venue to present, demonstrate and discuss the latest advancements in Web research that involves the Latin American Web community in its broadest sense. LA-WEB offers a great venue to show exciting new work that is mature (full papers) and work that is at an early stage and can benefit from discussion with colleagues (short papers). In this edition, LA-WEB will be co-located with The Web Conference 2019. We expect that this creates an opportunity for a synergetic atmosphere between the Latin American community and the global community of leading Web researchers.