It would look very cool in the Book page:

https://books.j11g.com/search.php?id=484

This is really nice. I have a personal book library app too, also in PHP/MySQL, though as a former library employee I ended up focusing more on cataloguing and checkout. (I import from the Library of Congress API rather than Amazon, for example.)

Also, I wrote a bunch of me-specific hacks and am still working on patching all those out (ten years later, lol) with the intention of making it usable to others and publishable as a Sandstorm app.

I'm also still in the process of open sourcing it, mostly for some of the same reasons you mentioned. Right now my library-specific code is open sourced but the core framework I built it on top of is not yet: I've only recently begun modernizing the security code.

I would love to see your code someday if you ever get around to sharing it though!

Do you know the number of pages for each book? Then you could adjust the thickness automatically :)

Your app is very cool! I agree, having 3D book images could make it look nice, tell me if you need any help for that :)