You can generate and decode / read QR code graphics with our QR code generator web API at api.qrserver.com.
Call the URL https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=Example to get a QR code with the content "Example":
Now replace "Example" in the URL to get a new QR code with a text choosen by you. You can find a detailed function description and examples at our API documentation.
You can create colored QR codes with our API. Just choose a background and / or a foreground color and take care of good contrast between the light and dark modules / pixels. Furthermore, a colorized QR code should be no negative (in terms of color, the actually black pixels / modules have to be darker than the normally white pixels) as the dark modules / pixels contain the data and a negative will confuse many QR code readers:
You can find a detailed function description and examples at our API documentation.
Please have a look at the API documentation for detailed instructions, parameters and examples.