File Viewer is a FREE macOS utility that
File Viewer allows you to view any file on your Mac. Simply drag and drop any file or folder onto the program window. File Viewer includes many features and can play common audio and video formats, as well as display many image, Web, and page layout file types. File Viewer also provides hexadecimal, text, and icon views to help you inspect the contents of each file.
With File Viewer, you can identify unknown file types and locate programs that open them. The software is linked to the FileInfo.com database, the Central File Extensions Registry, which contains thousands of file extension entries. Each file that is opened in File Viewer is matched to the FileInfo.com database, and File Viewer displays the list of matched file types.
For more information about File Viewer, visit the About page.