Creating a QR Code step by step

it's nice to have an explanation. for me, I just wanted to quickly make them. Googling led to ad covered sites and "register to use" site. Found a few on GitHub but they had other issues so threw together my own using a well designed library I'd used before. took about 15 minutes

https://greggman.github.io/qr-code/

might add more options but in truth I don't think most users need the options

happy you found it to be useful. I also wanted to write an implementation for sometime. The only things I could find were ready-made packages (python/Golang...etc).

The part I'd also like to know about is error correction, if you have anything useful related to QR codes for that.