The Europeana Newspapers project is digitizing newspapers from the 17th-20th centuries across 22 European languages. It has provided full text for over 2 million newspaper pages and metadata for over 18 million additional pages. Usability testing was conducted with researchers and improvements were made to search, browsing, and display functionality based on feedback. Researchers value the project for enabling new large-scale, interdisciplinary, and computational analyses of digitized newspaper archives.