In order to optimize memory consumption, various changes were made to the Goobi viewer indexer and the Goobi viewer core. The indexer has been converting various formats to ALTO for a long time. What's new is that these are no longer stored exclusively in the Solr search index, but also in the file system. The texts for the search are indexed in the search index. ALTO files are now read from the file system for display. This reduced the size of the search index while maintaining the same functionality. In addition, the ALTO files can now also be used by other components, such as the ContentServer, for PDF generation to store full texts.