File Extensions "X-Z"

File Extensions

File extensions are often used to determine the program that created the file. While users can rename files and/or associate odd extensions with particular programs, the following are some fairly standard associations.

Please let me know if you have applications not listed here, please advise so I can add them to the list. 


You can click on the first letter of the extension to go to that group
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.X LEX Program File or AVS Image
.X01 Paradox Secondary Index (can be 01 to 09)
.X16 Macromedia Program Extension (16-bit)
.X32 Macromedia Program Extension (32-bit)
.X5 Rockwell Software Logix 5 File
.XA Extended Architecture File or File on PSX Disc
.XAB Xenis Mail Address Book
.XAR Corel Xara Drawing
.XBM X Bitmap Graphic
.XFN Ventura Printer Font
.XFT Chiwriter 24 Pin Printer Font
.XFX Fax File (various)
.XI Fast Tracker 2 Instrument or ScreamTracker Instrument File
.XIF Wang Image File or Xerox Image File
.XLA Excel Add-in
.XLB Excel File
.XLC Excel Chart
.XLD Excel Dialog
.XLG Xnetech Engraving Logo File
.XLK Excel Backup
.XLL Excel Add-in (Dynamic Link Library)
.XLM Excel Macro
.XLS Excel Worksheet
.XLSX Microsoft Excel 2007+ Format
.XLT Excel Template or Lotus Translation Table
.XLV Excel VBA
.XLW Excel Workspace
.XM Sound File or Fast Tracker 2 Extended Module
.XML Extensible Markup Language File
.XNK Exchange Shortcut
.XOT Xnetech Job Output File
.XPM X Picsmap Graphic
.XQT SuperCalc Macro Sheet
.XRF Cross Reference
.XR1 Epic MegaGames Xargon File
.XSL XML Stylesheet
.XT* Crosstalk Related File
.XWD X Windows Dump or Crossdown Puzzle File
.XWF Yamaha XG Works File
.XXE Xxencoded File
.XY XYWrite Text File
.XY3 XYWrite Text File
.XY4 XYWrite IV Document
.XYP XYWrite III Plus Document
.XYW XYWrite Windows 4.0 Document

.Y Compressed Archive File
.Y01 Paradox Secondary Index (can be 01 to 09)
.YAL Arts & Letters Clipart
.YBK Encarta Yearbook
.YUV Color Space Pixel Format

.Z Compressed Archive File
.ZC Zipkey Configuration File
.ZIP Compressed Archive File
.ZOM Compressed Archive File
.ZOO Compressed Archive File
.ZVD ZyXEL Voice File
.ZW Chinese