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The File Format Database

Search over 10,000 file extensions and software programs.

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File Type of the Day

Today • June 3

.WMV

Windows Media Video

A WMV file is a video saved in the Microsoft Advanced Systems Format (ASF) and compressed with Windows Media Video (WMV) compression. It may store an animation, video clip, TV episode, or movie and supports high-definition (HD) video.

June 2

.MBOX

Email Mailbox

An MBOX file is an email mailbox, saved in a mail storage format that lists an entire inbox's messages in a single text file. It saves messages in a concatenated format where each message is listed after another, starting with the From header.

June 1

.WBCAT

Windows Backup Catalog

A WBCAT file is a backup information file created by Windows Backup and Restore. It is stored within a backup and contains a catalog of that backup's files.

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FileInfo.com 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 FileInfo.com.

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