ElasticPress version 2.3 has been released, bringing with it a new Documents feature.
This feature indexes text within popular file types (e.g. pdf, doc, ppt) and adds those files to search results, rectifying a gap in standard WordPress search. The Documents feature requires the Elasticsearch Ingest Attachment plugin be installed on the cluster. ElasticPress.io hosting comes with support out-of-the-box, making it easy to get started searching documents.