1. File Extensions

2. File Extensions .ppt .pptx .pot .potx .pdf .doc .docx Extension
Description
.ppt
PowerPoint 1997 – 2003 presentation
.pptx
PowerPoint 2007 onwards presentation
.pot
PowerPoint 1997 – 2003 template file
.potx
PowerPoint 2007 onwards template file
.pdf
Portable Document Format
.doc
Word 1997 – 2003 document
.docx
Word 2007 onwards document

3. File Extensions (cont’d)
Description
.docx
Word 2007 onwards document
.dot
Word 1997 – 2003 template document
.dotx
Word 2007 onwards template document
.jpeg
Picture file
.png
Transparent picture file
.emf
Enhanced Metafile (picture/graphic)
.xls
Excel 1997 – 2003 file
.xlsx
Excel 2007 onwards file