1
Upload PPTSelect legacy PPT presentation file.
2
Conversion Mode
3
Convert to PPTX
4
Download PPTX
presentation Converter• 100% Client-Side

PPT to PPTX Converter

ppt→pptx

Drop PPT file here, or browse

Select file for private local conversion

Private by Design

Your files are processed directly on your device using WebAssembly, HTML5 Canvas, and client-side runtimes.

No server upload No cloud copy 100% local processing
How To Convert

How to convert PPT to PPTX

Step 1

Upload PPT

Select legacy PPT presentation file.

Step 2

Conversion Mode

Confirm presentation structure parameters.

Step 3

Convert to PPTX

Transform PPT binary into modern OpenXML structure.

Step 4

Download PPTX

Download converted PPTX file.