The PPT format is a proprietary binary file format developed by Microsoft. It is mostly associated with Microsoft office PowerPoint, a closed source slide show presentation application. In Microsoft PowerPoint 2007 onwards, the .ppt filename extension format was superseded by the .pptx format which is part of the Office Open XML specification. Documents to be saved in the .ppt format are saved as PowerPoint 97, 2003 presentations.
The PPTX file format is a proprietary XML based file format developed by Microsoft. It is mostly associated with Microsoft office PowerPoint, a closed source slide show presentation application. It is the default format that succeeded the .ppt filename extension from Microsoft PowerPoint 2007 SP1 onwards and is part of the Office Open XML specification. Documents to be saved in the .pptx format are saved as PowerPoint presentations. Because the pptx file format is part of the larger opendocument XML file format, many non-proprietary applications are able to open files saved with the .pptx filename extension.
FreeFileConvert uses tuned encoding for PPT to PPTX conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload PPT files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized PPTX results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent PPTX audio with dependable progress tracking.
The ppt format uses Microsoft's OLE 2 compound document file format. It contains a hierarchical structure of storage and streams broken down to a user stream, PowerPoint document stream, pictures stream, an optional stream, and custom XML data stream. Actual content is represented as slide containers within the document stream. The format allows the inclusion of external objects such as pictures, sounds, and movies into one presentation.
The .pptx filename extension is a compressed ZIP archive with an xml directory structure. The format supports macros, charts, embedded media files, and images. It is specified in the open standard ISO/IEC 29500-1:2012. A free compatibility update allows older versions of Microsoft Office PowerPoint such as Office 2003 to open .pptx documents.
Upload your presentation file in the PPT format from your device, Dropbox, or Google Drive.
Select PPTX as the output format and click Convert. Adjust optional settings if needed.
Download the converted presentation file. Each file stays available for up to 5 downloads.