Thanks for checking it out! Essentially, for any given QR code the maximum error rate is reached when you deplete every block's health bar to 1 remaining slice,

Thanks for checking it out! Essentially, for any given QR code the maximum error rate is reached when you deplete every block's health bar to 1 remaining slice, making sure to invert every pixel in each codeword you've touched (the individual tetris-piece shaped chunks), and then introduce one more single pixel error in any block. This is actually independent of the arrangement of corrupted codewords within each block. The amount of redundancy is determined solely by the specific version-ecLevel pair a code has. So, the code with the largest amount of redundancy (in bytes) is one that has version 40 and EC level H - a staggering 2.43kB of redundancy vs. 1.28kB of data! See this particular sample: https://qris.cool/decode?sample=135 https://qris.cool/decode?sample=135