01
A design canvas exporting to PowerPoint, versus a tool built for it
Canva is fundamentally a free-form design canvas — the same engine behind social posts, documents, and websites also builds presentations. Exporting to PowerPoint means translating a design-canvas layout into slide shapes, which is a different problem than generating directly into that format.
Skiaw's pipeline exists for one output. The deck is laid out in a browser, then geometry is measured off the rendered page and converted directly into PowerPoint shapes — there's no design-canvas format the file has to be translated out of.
This doesn't make Canva's export bad; Canva has invested heavily in PowerPoint compatibility precisely because so many users need it. It means the two tools are solving the export problem from opposite directions, and it's worth testing your own content in both before deciding it doesn't matter.