Format comparison
DOC vs PPTX
How do DOC and PPTXcompare? Here's everything you need to know to choose the right format — and how to convert between them.
.doc
Full guide →Microsoft Word Document (Legacy)
DOC is the legacy binary format used by Microsoft Word before 2007. While still widely encountered, it has been superseded by DOCX. Many older documents and templates still use this format.
.pptx
Full guide →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 | DOC | PPTX |
|---|---|---|
| Full name | Microsoft Word Document (Legacy) | Office Open XML Presentation |
| Extension | .doc | .pptx |
| MIME type | application/msword | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| Category | Document | Document |
| Developer | Microsoft | Microsoft |
| Year introduced | 1983 | 2007 |
DOC advantages
- Universal recognition
- Compatible with older Word versions
- Still supported by all major office suites
- Extensive installed base of existing documents
DOC limitations
- Larger file sizes than DOCX
- Binary format — harder to recover if corrupted
- Limited to older feature set
- Being phased out in favor of DOCX
PPTX advantages
- Rich multimedia and animation support
- Industry standard for presentations
- Compatible with Google Slides and Keynote
- Supports templates and themes
PPTX limitations
- Large file sizes with embedded media
- Formatting varies between platforms
- Complex format for simple slideshows
- Animation support inconsistent outside PowerPoint
Which should you use?
DOC and PPTX serve different purposes. DOC is ideal for opening legacy documents, while PPTX excels at business presentations.
Best uses for DOC
Opening legacy documents
Compatibility with older systems
Template archives
Government and institutional legacy files
Best uses for PPTX
Business presentations
Educational lectures and courses
Sales pitches and proposals
Conference talks
Convert between DOC and PPTX
Need to switch formats? Convert for free with SquishConvert.