Data2Slide
Good for turning a plain spreadsheet or report into a deck with charts nobody has to build by hand, and the offline HTML export means the result isn't locked behind a login. It is a one-person product built by a data analyst alongside a day job, and its PowerPoint export is a set of slide screenshots, so treat HTML as the real output format.
Pros
- parses CSV, Excel, PDF and screenshots into charts without manual setup, in the browser
- exports a self-contained offline HTML file instead of only a hosted link
- one free 10-slide deck to test before paying
- checks whether a file can support charts before generating, and says what to fix
Cons
- PowerPoint export is one screenshot per slide, so the PPTX is not editable
- no confirmed API for pulling generated decks into another workflow
- built and run by a single developer, with no legal entity named beyond the brand