Open 400+ file formats with File Viewer Plus 5. Browse, view, edit, and convert your files with one easy-to-use application. File Viewer Plus is the essential app for your Windows PC. File Viewer Plus 5 opens over 400 file formats. View dozens of common file types, such as Office documents, PDFs, and image files, all with one program. Play hundreds of audio and video file formats with the built-in media player. Decompress archives with the file decompression tool.