Storage form
PPTX is a file format used by Microsoft PowerPoint 2007 and later, which belongs to XML file format and is based on Open Packaging Convention (OPC) container format. This format supports more features and more advanced functions, including charts, graphics, images, tables, animations and so on.
PPT is a file format of early PowerPoint versions, such as PowerPoint 97-2003. The format is binary file format, which is encapsulated by different file formats.
Compatibility and version
PPTX is the mainstream PowerPoint file format at present, and almost all versions of Microsoft PowerPoint can open and edit PPTX files normally. Earlier versions of PowerPoint may not be able to open and edit PPTX files normally.
Functions and characteristics
Because PPTX is an XML-based file format, it supports more features and functions, such as more advanced animation effects, more complex charts and graphs, and more powerful table functions. In addition, PPTX also supports embedded fonts and more chart types.
However, the PPT file format is relatively old, with fewer functions, and it does not support some new features and functions.
safe
From the security point of view, there is not much difference between PPTX and PPT. Both formats support security functions such as encryption and digital signature, which can prevent documents from being modified or accessed without authorization.
abstract
Generally speaking, PPTX is the mainstream PowerPoint file format, with more features and functions, better compatibility and security.
Therefore, it is suggested to save the document in PPTX format in order to make better use of various functions and features of PowerPoint. If you need to open and edit documents in an earlier version of PowerPoint, you can use the Microsoft Office Compatibility Pack or other conversion tools to convert PPTX to an earlier version of PPT format.