I've got a series of QR codes generated by Powershell script (not mine, see below). It's just a content of sample TXT file split into 64 characters chunks. For each chunk I've got one QR code. There are 5 files with the names 00.png to 04.png

My small VB.NET app using ZXing library, reads files one by one and decodes QR codes. I was surprised that the second file 01.png couldn't be decoded by the library. The rest is fine.

All QR codes are read like this:

Dim reader = New BarcodeReader()
Dim barcodeBitmap As Bitmap

barcodeBitmap = Image.FromFile("01.png")

Dim result As ZXing.Result
result = reader.Decode(barcodeBitmap)

problematic QR code

QRCodes generator used - .6.0

ZXing online - .jspx

ZXing used - 0.16.10.0 for .NET 4.5

I can assume (to some extent) that the QR code 01.png is fine since I tried to decode it in other apps. Two apps on Android and even online version of ZXing library can decode attached file without any problems. This is the first time I use that library so no idea why that particular QR code can't be properly decoded. I'm pretty new in QR codes topic as well, so maybe I'm missing something important.