Google QR code
This service is used by almost everyone to create a QR-code or service, like ours.We also used this service on this page.
Principle
https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=Hello%20world- chs - The image size in pixels, for example - 150×150.
- cht - Image type: 'qr' means QR-code.
- chl - The text itself, which we want to put into QR-code.