Custom subdomains
Every project gets an auto-generated subdomain like bright-forest-a3.sealstaticpages.com. You can change this to anything you like.
Setting a custom subdomain
From the project edit page, enter your desired subdomain in the Custom subdomain field. It must only contain lowercase letters, numbers and hyphens and be at most 63 characters.
Once saved, your project is available at both the new subdomain and the old one.
Example
Change bright-forest-a3.sealstaticpages.com to docs.sealstaticpages.com or my-portfolio.sealstaticpages.com.