You can set the default rule for slug generation.
Rules for generation:
Incremental — slugs will follow each other in order
Random — slugs will contain 6 random characters
Secure — slugs will contain 12 random characters
Go to your Short.io account.
Open the User Menu.
3. Choose "Account settings."
4. At the bottom of the page you will find the default settings. Choose the rule and save changes.