Microsoft Office Binary (doc, xls, ppt) File Formats
The current and supported specifications for the Microsoft Word 97-2010, Excel 97-2010, and PowerPoint 97-2010 binary file formats are located here. All of these specifications are covered by the Microsoft Open Specification Promise.
Previously published versions of these specifications, which are no longer supported or updated, are located here. All of these specifications are also covered by the Microsoft Open Specification Promise.
They include:
| • | Word 97-2007 Binary File Format (.doc) Specification |
| • | PowerPoint 97-2007 Binary File Format (.ppt) Specification |
| • | Excel 97-2007 Binary File Format (.xls) Specification |
| • | Excel 2007 Binary File Format (.xlsb) Specification |
| • | Office Drawing 97-2007 Binary Format Specification |
