Browse file extensions by file type category:
Microsoft Office file type extensions
(98 file extension database entries)
List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps
Microsoft Office file extension list
List of file types used by various applications from Microsoft Office productivity suite and Office 365 apps.
This category of file extensions contains file types from the Microsoft Office productivity suite and its individual programs. The latest edition, Office 2016, is available for Windows and OS X in several editions that offer various combinations of productivity software and also as a subscription based platform - Office 365. The latest editions of Office offers the following programs:
- Word (all editions)
- Excel (all editions)
- PowerPoint (all editions)
- OneNote (all editions)
- Outlook (Home and Business and higher)
- Publisher (Professional and higher; Windows only)
- Access (Professional and higher; Windows only)
- Skype for Business (Professional Plus and higher; Windows only)
- Additionally, there are two programs from the Office suite that are not part of any of the suites at this time, namely Visio and Project. These two can be only obtained as part of Office 365 subscription.
Over the years, users became familiar with most of the common Microsoft Office file extensions, with .doc, .xls, and .ppt files being probably the three most known. With the release of Office 2007, Microsoft was trying to leave those well-known extensions in the past and replace them with the new XML-based formats that have a 4-letter file extensions, with "x" being appended to the original extension, so for example .doc became .docx, .xls -> .xlsx, .ppt -> .pptx etc. The key difference is that the original files were saved in binary form and the new ones are XML-based. These new formats are still being used in the latest 2016 edition of Microsoft Office, but the older formats are still supported and can be opened in their respective programs.
Another change introduced in the 2007 Office release was that there are different extensions for files that have macros enabled and those that do not. Macro-enabled documents include a file name extension that ends with the letter "m" instead of an "x". For example a macro-enabled Word 2007 document has the .docm extension and thereby allows any user or software to recognize documents that allow additional code (macro).
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![]() | Microsoft Word Open XML document |
![]() | Microsoft Excel Open XML workbook and spreadsheet |
file extension vsdx | Microsoft Visio drawing |
![]() | Microsoft OneNote document |
file extension rpmsg | Microsoft Restricted Permission Message |
![]() | Microsoft Organization Chart chart data |
![]() | Microsoft Publisher document |
![]() | Microsoft Word document (prior version 2007) |
![]() | Microsoft Project plan file |
![]() | Microsoft Word auto-save document |
Microsoft Access database | |
![]() | Microsoft Excel 97 to 2003 workbook |
Microsoft Access main database | |
![]() | Microsoft PowerPoint Open XML presentation |
![]() | Microsoft Office personalized settings |
file extension oft | Microsoft Outlook template |
![]() | Microsoft Visio diagram document |
![]() | Microsoft PowerPoint 97 to 2003 presentation |
![]() | Microsoft Outlook personal storage table |
![]() | Microsoft Excel binary workbook |
Microsoft Access report shapshot | |
Microsoft Office InfoPath template form | |
![]() | Microsoft PowerPoint Open XML complete slide show |
Microsoft Access compiled execute only database | |
Microsoft Project database | |
Microsoft Access database lock file | |
file extension crtx | Microsoft Office chart template |
Microsoft Access compiled database (application) | |
![]() | Microsoft Excel Open XML macro-enabled workbook |
![]() | Microsoft Office theme |
file extension ost | Microsoft Outlook inbox off-line folder |
![]() | Microsoft Excel add-in |
file extension onepkg | Microsoft OneNote package |
![]() | Microsoft Word document template (up to Microsoft Word 2003 version) |
![]() | Microsoft Word XML document template |
![]() | Outlook for Mac e-mail database |
![]() | Microsoft PowerPoint macro-enabled Open XML complete slide show |
![]() | Microsoft Excel toolbars settings |
![]() | Microsoft Word document autosave file |
![]() | Microsoft Excel spreadsheet |
![]() | Microsoft Excel Open XML macro-enabled add-in |
![]() | Microsoft PowerPoint 97 to 2003 complete slide show |
file extension obi | RSS subscription file from Microsoft Outlook 2007 and above versions |
file extension iaf | Microsoft Outlook exported account and email setting |
![]() | Microsoft Office automatic correction list |
![]() | Microsoft Word document saved backup |
![]() | Microsoft PowerPoint macro-enabled Open XML presentation |
Microsoft Access table shortcut | |
![]() | Microsoft Visio smartshapes data |
Microsoft Access database template | |
file extension ops | Microsoft Office profile settings |
Microsoft Access runtime mode database | |
![]() | Microsoft Word Open XML macro-enabled document |
![]() | Microsoft PowerPoint Open XML slide file |
![]() | Microsoft Excel 97 to 2003 workbook template |
![]() | Microsoft Excel AutoRecover backup |
Microsoft Symbolic Link format | |
![]() | Microsoft Project template |
![]() | Microsoft PowerPoint 97 to 2003 template |
![]() | Microsoft Excel macro |
![]() | Microsoft PowerPoint Open XML presentation template |
file extension oab | Microsoft Outlook offline address book |
![]() | Microsoft Excel Open XML workbook template |
Microsoft Access compiled project | |
![]() | Microsoft Excel workspace |
![]() | Microsoft SharePoint WorkSpace Groove data |
![]() | Microsoft PowerPoint macro-enabled Open XML add-in |
Microsoft Access report shortcut | |
Microsoft Access database template | |
![]() | Microsoft Excel add-in |
![]() | Microsoft PowerPoint 97 to 2003 add-in |
![]() | Microsoft Word Open XML macro-enabled document template |
Microsoft Office InfoPath form definition | |
Microsoft Access add-in | |
Microsoft Access workgroup information | |
Microsoft Access add-in | |
![]() | Microsoft PowerPoint macro-enabled Open XML slide |
![]() | Microsoft Excel Open XML macro-enabled workbook template |
![]() | Microsoft Excel chart |
![]() | Microsoft Visio flowchart |
Microsoft Access macro shortcut | |
Microsoft Access digitally signed database | |
![]() | Microsoft Visio XML drawing |
![]() | Microsoft Publisher packed document |
Microsoft Access form shortcut | |
file extension xslb | Microsoft Excel data |
Microsoft Access project | |
![]() | Microsoft Word add-in |
Microsoft Access query shortcut | |
file extension prf | Microsoft Outlook profile |
![]() | Microsoft PowerPoint add-in |
![]() | Microsoft Visio stencil XML document |
![]() | Microsoft PowerPoint macro-enabled Open XML template |
Microsoft Access database wizard | |
file extension h1q | Microsoft Help merged query index |
Microsoft Access data access page | |
file extension cnv | Microsoft Word text conversion data |
![]() | Microsoft Visio XML template |
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