The File Information Database

Search over 10,000 file extensions and software programs.

File Type of the Day

Today • August 5


Virtual CD

A VCD file is a disc image of a CD or DVD and is recognized by Windows as an actual disc, even though the data is on the hard drive. VCD files allow CDs and DVDs to be used without requiring physical drives and is useful for mounting discs on network computers.

August 4


Debian Software Package

A DEB file is a standard Unix archive that contains two bzipped or gzipped archives, one for the installer control information and another for the actual installable data. DEB files are often used for software installation packages by multiple versions of Linux including Ubuntu, Kubuntu, Edubuntu, and PCLinuxOS.

August 3


Microsoft PowerPoint Presentation

A PPTX file is a presentation file created by Microsoft PowerPoint or exported by another presentation program, such as OpenOffice Impress or Apple Keynote. It contains a collection of slides, including their text, images, formatting, animations, drawn objects, and other media.

Universal File Viewers

Open your files with one of the file viewing utilities recommended by

About contains a searchable database of over 10,000 file extensions with detailed information about the associated file types. You can look up information about unknown file types and find programs that open the files. Learn more about

Recent Updates

  • June 28, 2021File Viewer for Android 4.0 is now available.
  • May 29, 2021Published new version of with modernized user interface and performance improvements.
  • February 4, 2021File Viewer Plus 4.0.1 is now available.
  • January 26, 2021Learn about macOS packages and how to view the contents of a package.
  • September 9, 2020Sort programs by pricing and platform on file extension pages.
  • July 23, 2020Pricing information is now listed next to each program on file extension pages.