# Compare PowerPoint Presentations on Windows, Linux, and macOS

> Free app and APIs for comparing PowerPoint presentations in PPT, PPS, PPTX, POTX, PPSX, PPTM, and ODP formats.

Source: https://products.aspose.com/slides/comparison/
Updated: 2026-06-05



## FAQ

### What does comparing two presentations actually report?

Whether shapes, text and layout match between the two files, so you can find what changed between two revisions of a deck without opening both.

### Which formats can be compared?

PPT, PPS, PPTX, POTX, PPSX, PPTM and ODP.

### Is this a diff tool that produces a marked-up presentation?

No. It answers whether and where the presentations differ; it does not generate a third deck with tracked changes. Building that on top of the result is your code's job.

### Can I compare a legacy .ppt against a modern .pptx?

Yes. Both are read into the same model before comparison, so a format change between revisions does not by itself register as a difference in content.