Hi, 

It would be a valuable addition if developers had the option to configure the DPI for both QR Code and Barcode components. This feature would facilitate adjusting the DPI when exporting the codes.

If the value string for a QR Code is greater than 100 characters the resulting QR Code cannot be scanned. Here's a StackBlitz demonstrating the issue:

https://stackblitz.com/edit/angular-2axafs?file=app/app.component.ts

Interestingly enough, this issue doesn't seem to be present in the AJAX version of the QR Code component as putting in a +100 character string on the example page results in a valid QR Code: https://demos.telerik.com/aspnet-ajax/barcode/examples/qrcode/defaultcs.aspx