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    IT Management 4 min read

    Letter X: Data Formats & File Extensions

    Find data file formats and file extensions that start with the letter X, or view thousands of file extensions and file formats in the complete list.

    With literally thousands of data file formats employed by Windows and Window-based apps, keeping track of all the file extensions employed by your software applications and programs can be quite a challenge. Fortunately, Webopedia’s Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below.

    Data File Formats that Begin with the Letter ‘X’

    .x DirectX Object file
    AVS X image file (SDSC Image Tool)
    Lex source code file
    .x01 Secondary index (Paradox)
    .x02 Secondary index (Paradox)
    .x03 Secondary index (Paradox)
    .x04 Secondary index (Paradox)
    .x05 Secondary index (Paradox)
    .x06 Secondary index (Paradox)
    .x07 Secondary index (Paradox)
    .x08 Secondary index (Paradox)
    .x09 Secondary index (Paradox)
    .x16 Macromedia Program Extension (16-bit)
    .x32 Macromedia Program Extension (32-bit)
    .xap Silveright Application Package
    .xbel XML Bookmark Exchange Language file
    .xbm X11 Bitmap graphics
    .xcf Gimp Image file
    .xdf Milnta APL Transfer Function
    Workshare Synergy file
    .xdw X Windows Screen Dump file
    .xef X-Genics eManager – XML form and data for eManager
    .xem X-Genics eManager – Metered units / credit definition for forms/file usage in eManager
    .xep X-Genics eManager – File packaging / unpacking information for eManager components
    .xes X-Genics eManager – XML definition for UI skins
    .xet X-Genics eManager – XML definition for eManager process
    .xev X-Genics eManager – File download definition for auto-update and delivery of new procedures
    .xez X-Genics eManager – Template package for eManager
    .xfd XML Form in XFDL Format
    .xfdl Extensible Forms Description Language file
    .xfn Printer font (Xerox 4045) (Ventura Publisher)
    .xft 24 pin printer font (ChiWriter)
    .xfx Fax File (various)
    .xhtml Extensible HyperText Markup Language file
    .xi Fast Tracker 2 Instrument or ScreamTracker Instrument file
    .xif Wang image file
    Often a Fax image (TIFF) file
    ScanSoft Pagis XIF Extended Image Format
    Xerox image file
    .xla Xlib Archive (
    .xla Add-in macro sheet (MS Excel)
    .xlb Data (MS Excel)
    .xlc Chart document (MS Excel)
    .xlk Excel Backup
    .xll Excel Dynamic Link Library (MS Excel)
    .xlm Macro sheet (MS Excel)
    .xlr MS Works file
    .xls Spreadsheet(MS Works)
    DATAIR Data Import Specification Translation file
    Worksheet (MS Excel)
    .xlsm Microsoft Excel Macro-Enabled Workbook file
    .xlsx Microsoft Excel XML file
    .xlt Template (MS Excel)
    Translation table (Lotus 1-2-3 – Symphony – Procomm Plus)
    .xlw Workbook (MS Excel)
    .xlx XoloX Incomplete Download file
    .xm Music (Fast Tracker)
    .xmi Compressed eXtended MIdi music
    .xml Extensible Markup Language file
    .xmp Extensible Metadata Platform
    .xnf Standard Network File form
    .xpi XPInstall File
    Digital surveillance system
    .xnk Microsoft Exchange Shortcut
    .xpl Music file
    .xpm X11 Pixel Map graphics
    .xpr Memorex CD-ROM label file
    .xps XML Paper Specification file
    .xpt Mozilla Firefox Component file
    XPCOM Type Library
    .xpw Leading Market Technologies EXPO
    Screen-Fillable Surfer Version of a Form
    .xqt Executable file (Waffle)
    Macro sheet (SuperCalc)
    .xpv digital surveillance system
    .xrf Cross-reference file
    .xsd XML Schema file
    .xsf Milnta APL Transfer Function
    .xsl Extensible Stylesheet Language file
    .xspf XML Shareable Playlist file
    .xss Ability Office Spreadsheet
    .xtb External translation table (LocoScript)
    .xtm Xtremsplit Data file
    .xtr MapTool file (an add-on for UI-View)
    Xtreme Tuning files
    .xul XML User Interface Language file
    .xvb WinExplorer VB Script
    .xvid Xvid Video file
    .xvl Compact 3D file format for web apps.(Lattice 3D)
    .xwd X Window System window dump image graphics (SDSC Image Tool)
    .xwk Keyboard mapping (Crosstalk)
    .xwp Session (Crosstalk)
    Text file (Xerox Writer)
    .xx Compressed file ASCII archive created by XXENCODE (uuexe515.exe)
    .xxe Compressed file ASCII archive created by XXENCODE (uuexe515.exe)
    .xxx Singer Sewing Machine Professional SewWare file
    Embroidery Design file
    .xy Text file (XY Write)
    .xy3 Text file (XYWrite III)
    .xyw Text file (XyWrite III)
    .xyz ASCII RPG Maker Graphic Format
    .xz XZ Compressed Archive file

    Recommended Reading: An Introduction to Data File Formats and Their File Extensions

    This article was last updated on April 17, 2012