Common Filetypes

If a file does not appear to have a filetype extension, open the folder it is stored in and click on Tools from the menu, then Folder Options. Click on the View tab and un-tick Hide extensions for known file types.

• .avi - video file. Open with Windows Media Player
• .bmp - image file. Open with Paint
• .cfg - configuration file.
• .dat - data file.
• .doc - document file. Open with Word
• .exe - program file. Double-click to run
• .gif - image file. Open with Paint
• .htm - web document. Open with Internet Explorer
• .html - web document. Open with Internet Explorer
• .ini - text configuration file. Open with Notepad
• .jpeg/jpg - image file. Open with Paint
• .mov - movie file. Open with Quicktime
• .mpeg/mpg - video file. Open with QuickTime
• .mp3 - audio file. Open with Windows Media Player
• .pdf - secure document file. Open with Adobe Reader
• .pps - slideshow presentation. Open with PowerPoint
• .ppt - presentation file. Open with PowerPoint
• .sys - system file.
• .txt - text file. Open with Notepad
• .wav - audio file. Open with Windows Media Player
• .xls - spreadsheet file. Open with Excel
• .zip - compressed file. Open with WinZip