A file viewer is a utility application software on operating systems, such as Linux, macOS, or Windows.
File viewers allow the user to open and view content[1] on a device, such as a Personal Computer (PC) or a mobile phone.
Some media editors, such as Audacity, allow users to open most files as "raw data.
A web browser is a type of file viewer that renders HTML markup into a human-friendly presentation.
Web browsers may also view multimedia files such as images, videos, preformatted documents, interactive environments, 3D models, augmented reality and virtual reality applets.