You can choose the type of redirect for all links in a folder.
To change the HTTP settings
Sign in to your Short.io account.
In the Dashboard navigate to the Branded links panel and click on to expand the view:
For the given folder click on :
In the HTTP Status settings panel:
Select the type of redirect that suits you best
Click on Save to confirm the changes
Hereafter, links created within this folder will have the specified settings applied automatically.
Other folder features