I've been working on multiple client projects where we needed to automatically import CSV files and display them on a site and I couldn't find a handy existing solution. Our typical scenarios include tables that changed daily like court data or stock information. With these and other possibilities in mind I came up with an idea to create a universal viewer module for different types of files. Basically this is a View module but for files. I started the Viewer module by adding support for CSV and later for XLSX/XLS and PDF.