This was insanely fun! I've never done a nonogram this big, and I learned a few new techniques to solve it! My only issue is that my QR scanner wasn't able to recognize it as a QR code, so I had to recreate it in MS paint to be able to scan it. Maybe make it so that once you solve the puzzle it shows an actual QR code?
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Thanks for playing! And, as I wrote in the description, you should be able to toggle between the puzzle and the clean QR code display by pressing Start (Enter on the web emulator) - I had to add this feature a little bit after the jam deadline because I ran into the same problem 😅 (otherwise I would've done like you suggested)