Some good QR code generators online that I've used are.
Beaconstac's QR Code generator
Flowcode QR Generator.
QR Code Generator.
To create a QR Code with QR code generator.
Select which type.
You may choose from URL, vCard, Plain Text, Email, SMS, Twitter, WiFi, and Bitcoin.
Fill in the details. Enter all the information needed in the fields that appear.
Download the QR Code.
QRCode Monkey is also one of the most popular free online qr code generators with millions of already created QR codes.
The high resolution of the QR codes and the powerful design options make it one of the best free QR code generators on the web that can be used for commercial and print purposes.