How do XLS and PPTXcompare? Here's everything you need to know to choose the right format — and how to convert between them.
Microsoft Excel Spreadsheet (Legacy)
XLS is the legacy binary format used by Microsoft Excel before 2007. While superseded by XLSX, many existing spreadsheets and enterprise systems still use this format.
Office Open XML Presentation
PPTX is the default format for Microsoft PowerPoint presentations. It supports slides, animations, transitions, speaker notes, and multimedia content for creating professional presentations.
| Specification | XLS | PPTX |
|---|---|---|
| Full name | Microsoft Excel Spreadsheet (Legacy) | Office Open XML Presentation |
| Extension | .xls | .pptx |
| MIME type | application/vnd.ms-excel | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| Category | Document | Document |
| Developer | Microsoft | Microsoft |
| Year introduced | 1987 | 2007 |
XLS and PPTX serve different purposes. XLS is ideal for legacy spreadsheet compatibility, while PPTX excels at business presentations.
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