Step 1.
Enter an image URL:
Set filename:
Or upload the existing file (<10MB, <10MP):
Select file...
Image:
Base64:
Step 2.
Base64 QR-code -> to value
Decode base64 encoded QR-code.
Result (change this value to generate new qr-code):
Also, you can do capture qr-code from webcam, with
this client-side javascript qrcode-scanner.