Very nice, great work! Some FYIs: On my iphone Safari browser, I found the next/prev buttons on the viewer to be very small targets. Also, before I noticed them, I tried swiping horizontally on the slide itself, but this triggers some weird zoom behavior. Lastly, it's hard to see the details of the slides when using this device/browser. Again, congrats on creating a great resource!
Those are good points, for sure. I hadn't considered the swiping part, especially. Mostly the details are stupidly small at mobile size -- as much as I'm a fan of responsive design, this really is more of a "desktop" activity.