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.
A file with the .otp extension is used to save presentation templates created by the programs that include Impress, OpenOffice.org and standard OpenDocument program by OASIS. These programs are free alternatives for those who do not want to incur expenses related to the installation of Microsoft Office. The OpenOffice.org program comprises of word processors, presentations, spreadsheets and other programs but the .otp extension is related to the presentation files created using the OpenOffice program.
FreeFileConvert uses tuned encoding for PPTX to OTP conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload PPTX files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized OTP 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 OTP audio with dependable progress tracking.
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.
A file with the .otp extension is a presentation format template that can be comprised of a combination of text, spreadsheets, graphics and presentation slides that have advanced styling features. Apart from OpenOffice.org, the .otp extension is also used by other applications. One of these applications is the Origin Graphic that is used to analyze data and to create graphs. All files created using this software are saved with the .otp extension. Another application is the Top Secret Crypto Gold in which the one-time usage pad key is stored using this extension.
Upload your presentation file in the PPTX format from your device, Dropbox, or Google Drive.
Select OTP 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.