PPT to PPTX

Convert PPT to PPTX online for free

1: Choose multiple local PPT files or enter the URL of an online PPT file. 2: Choose "PPTX" as target format and set options (optional). 3: Click the "START CONVERSION" button to convert PPT files to PPTX online.

Choose files or enter remote file URL

Set conversion options (optional)

# OUTPUT FILES FILE SIZE DOWNLOAD

PPT

Microsoft PowerPoint Binary File Format

File extension: .ppt

Microsoft PowerPoint up until 2007 version used a proprietary binary file format called PowerPoint Binary File Format (.PPT) as its primary format. In Microsoft Office 2007 the binary file formats were replaced as the default format by the new XML based Office Open XML formats.

PPTX

Office Open XML Presentation

File extension: .pptx, .pptm

The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc.