That's wonderful! I greatly appreciate it.
>Can the slide be saved locally? What extension is it?
Yes and No, the slides can be exported to HTML and viewed locally, but must be edited via the SlideHero interface. I considered exporting to PowerPoint, but there are just too many features like the quizzes and cloze activites that are just not possible to export to another tool.
Teachers can share slides though, and all shared slides are hosted on www.edslides.com
Please let me know if you need any additional help. My email is "eli AT slidehero.ai"
This feels incredibility risky, especially given you're expecting users to put in their own efforts editing the slides. That could all disappear tomorrow if you decide to wind up this business.
I should clarify, there is a facility to export to HTML for archiving purposes so a teacher would never lose the slides they created, however editing is only within the interface.