Office 2007 document file extensions

Office 2007 document file extension list

List of file name extensions of document and data types in the Microsoft Office 2007 suite release.

Over the years, users have come to know Microsoft Office file extensions - .doc, .xls, and .ppt are probably the three most popular. With the release of Office 2007, Microsoft is planning on leaving those well-known augmentations in the past and replacing them with the new XML-based format that consists of 4-letter file extensions.
here is a comprehensive list of all of the formats and matching extensions.

2007 Microsoft Office system documents saved by using Office XML Formats have new file name extensions that allow Office to differentiate these file format documents from binary documents used by previous Office versions. The new extensions borrow from the existing binary file name extensions by appending a letter to the end of the suffix. The default extensions for documents created in Word 2007, Excel 2007, and PowerPoint 2007 using the new file formats append the letter "x" and are .docx, .xlsx, and .pptx, respectively. Other Office document types that use the new file formats (including templates, add-ins, and PowerPoint shows) also receive new extensions.

Another new change introduced in the 2007 Office release is that there are different extensions for files that are macro-enabled versus those that are macro-free. 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 users or software applications, before a document opens, to identify that it contains code.

Extension	File type description
file extension accda	Microsoft Access file
file extension accdb	Office Access 2007 database file format
file extension accdc	Microsoft Access file
file extension accde	Office Access 2007 files that are in execute only mode
file extension accdr	Access 2007 file that enables you to open a database in runtime mode
file extension accdt	Access Database templates
file extension accdu	Microsoft Access file
file extension adn	Microsoft Access blank project template
file extension bdr	MS Publisher Document Border
file extension docm	Word 2007 XML macro-enabled document
file extension docx	Microsoft Word 2007 XML based document file format
file extension dotm	Word 2007 XML macro-enabled template file
file extension dotx	Word 2007 XML template file
file extension gfs	Microsoft Office Groove remote file
file extension grv	Microsoft Office Groove file
file extension gsa	Microsoft Groove template or working space archive
file extension kfl	Microsoft Outlook 2007 file
file extension laccdb	Microsoft Access lock file
file extension mdw	Microsoft Access workgroup information file
file extension mpp	Microsoft Project file
file extension msg	Microsoft Office Outlook message format
file extension obi	Microsoft Outlook 2007 file
file extension oft	Microsoft Outlook template file
file extension one	Microsoft OneNote section file
file extension onepkg	Microsoft OneNote package file
file extension ost	Microsoft Outlook/Inbox offline folder
file extension potm	PowerPoint 2007 Macro-Enabled XML template
file extension potx	Microsoft PowerPoint 2007 XML template
file extension ppam	PowerPoint 2007 macro-enabled XML add-in file
file extension ppsm	Microsoft PowerPoint 2007 macro-enabled XML show
file extension ppsx	Microsoft PowerPoint 2007 XML Show
file extension pptm	PowerPoint 2007 Macro-Enabled XML Presentation
file extension pptx	PowerPoint 2007 XML Presentation
file extension pub	Microsoft Publisher document
file extension sldm	Microsoft PowerPoint slide file
file extension sldx	Microsoft PowerPoint 2007 XML slide file
file extension thmx	Microsoft PowerPoint 2007 theme file - template
file extension xlam	Microsoft Excel 2007 XML macro-enabled add-in file
file extension xlsb	Excel 2007 Binary workbook
file extension xlsm	Excel 2007 XML macro-enabled workbook
file extension xlsx	Excel 2007 XML Workbook
file extension xltm	Excel 2007 XML macro-enabled template
file extension xltx	Excel 2007 XML template
file extension xsf	Microsoft Office InfoPath File
file extension xsn	Microsoft Office InfoPath file