For all the links in a folder you can change the predefined QR code settings by selecting error correction level, code colors, border radius, and add your custom logo.
You can also download the QR code in 3 different file formats.
To change the QR code settings
Sign in to your Short.io account.
In the Dashboard navigate to the Branded links panel and click on to expand the view:
Click on next to the folder which you want to customize:
From the QR code settings panel:
Hereafter, links created within this folder will have the specified settings applied automatically.