Library works fine with small json but with jsons upto 4 kb we are not able to decode data back from qrcode.

[punitaojha]

Here is a google colab link
https://colab.research.google.com/drive/1SToqOjzAyHPtJVeUSJMxnDbPcFUHXtvj?authuser=5#scrollTo=whr2DrzrMGT5

you will see that when we uncomment small json with only two keys we get right results, otherwise with big json either we get some numbers in byte string which cannot be decoded back or empty array.

[Vasiliy566]

i had same @punitaojha
1 I tried to code with qrcode.make() and decodes with qrtools.QR, so it was about 0.05% QR codes with long = 200 that was' not detected
2 I changed qrtools.QR reader to pyzbar.pyzbar.decode - so that issue closed for me that way
https://pypi.org/project/pyzbar/

[turicas]

There's a limit in the QRcode spec where you can store up to ~2.9kB of data (more info).