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Microsoft Office file extension list

Extention File Name
.xlsx Microsoft Excel Open XML workbook file
.pptx Microsoft PowerPoint Open XML presentation file
.pub Microsoft Publisher document file
.docx Microsoft Word Open XML document file
.one Microsoft OneNote document file
.doc Microsoft Word 97 to 2003 document file
.vsdx Microsoft Visio drawing file
.accdb Microsoft Access main database file
.rpmsg Microsoft Restricted Permission Message file
.mso Microsoft Organization Chart chart file
.xlsb Microsoft Excel binary workbook file
.asd Microsoft Word auto-save document file
.xls Microsoft Excel 97 to 2003 workbook file
.thmx Microsoft Office 2007/2010 theme file
.oft Microsoft Outlook template file
.xlsm Microsoft Excel Open XML macro-enabled workbook file
.mpp Microsoft Project plan file
.mdb Microsoft Access database file
.obi RSS subscription file from Microsoft Outlook 2007 and above versions
.pst Microsoft Outlook personal storage table file
.xsn Microsoft Office InfoPath template form file
.snp Microsoft Access report shapshot file
.ost Microsoft Outlook inbox off-line folder file
.olm Microsoft Outlook for Mac data file
.dotx Microsoft Word XML document template file
.laccdb Microsoft Access database lock file
.vsd Microsoft Visio diagram document file
.wbk Microsoft Word auto-backup document file
.accdr Microsoft Access runtime mode database file
.pptm Microsoft PowerPoint macro-enabled Open XML presentation file
.ppt Microsoft PowerPoint 97 to 2003 presentation file
.onepkg Microsoft OneNote package file
.xlam Microsoft Excel Open XML macro-enabled add-in file
.dot Microsoft Word 97 to 2003 document template file
.pip Microsoft Office personalized settings file
.xltx Microsoft Excel 2007/2010 Open XML workbook template file
.ppsx Microsoft PowerPoint 2007/2010 Open XML complete slide show file
.docm Microsoft Word Open XML macro-enabled document file
.mde Microsoft Access compiled database (application) file
.accde Microsoft Access 2007/2010 compiled execute only file
.ppsm Microsoft PowerPoint macro-enabled Open XML complete slide show file
.grv Microsoft SharePoint WorkSpace Groove file
.slk Microsoft Symbolic Link format file
.xla Microsoft Excel add-in file
.potx Microsoft PowerPoint Open XML presentation template file
.oab Microsoft Outlook offline address book file
.iaf Microsoft Outlook exported account and email setting file
.pps Microsoft PowerPoint 97 to 2003 complete slide show file
.xlw Microsoft Excel workspace file
.xlb Microsoft Excel Toolbars file
.crtx Microsoft Office 2007 chart template file
.pa Microsoft PowerPoint add-in file
.xlt Microsoft Excel 97 to 2003 workbook template file
.xar Microsoft Excel AutoRecover backup file
.dotm Microsoft Word Open XML macro-enabled document template file
.vss Microsoft Visio smartshapes file
.ops Microsoft Office profile settings file
.pot Microsoft PowerPoint 97 to 2003 template file
.svd Microsoft Word document autosave file
.mpd Microsoft Project database file
.mpt Microsoft Project template tile
.acl Microsoft Office automatic correction list
.xlm Microsoft Excel macro
.xltm Microsoft Excel 2007/2010 Open XML macro-enabled workbook template file
.xl Microsoft Excel spreadsheet file
. mdt Microsoft Access database template file
.accdc Microsoft Access 2007/2010 digitally signed database file
.vst Microsoft Visio flowchart file
.ade Microsoft Access compiled project file
.accdt Microsoft Access database template file
.mat Microsoft Access table shortcut file
.mdw Microsoft Access workgroup information file
.vdx Microsoft Visio drawing XML file
.xsf Microsoft Office InfoPath file
.xll Microsoft Excel add-in file
.sldx Microsoft PowerPoint Open XML slide file
.mar Microsoft Access report shortcut file
.ppam Microsoft PowerPoint macro-enabled Open XML add-in file
.accda Microsoft Access 2007/2010 add-in file
.mda Microsoft Access add-in file
.ppa Microsoft PowerPoint 97 to 2003 add-in file
.vsx Microsoft Visio stencil XML file
.xlc Microsoft Excel Chart file
.vtx Microsoft Visio XML template file
.prf Microsoft Outlook profile file
.puz Microsoft Publisher packed file
.potm Microsoft PowerPoint 2007/2010 macro-enabled Open XML template file
.wll Microsoft Word add-in file
.accdp Microsoft Access 2007/2010 project file
.maf Microsoft Access form shortcut file
.sldm Microsoft PowerPoint 2007/2010 macro-enabled Open XML slide file
.mam Microsoft Access macro shortcut file
.accdu Microsoft Access database wizard file
.maq Microsoft Access query shortcut file
.cnv Microsoft Word text conversion file
.maw Microsoft Access data access page file