{% hint style="info" %} Please follow the steps to set a custom domain in this order:
- Choosing a subdomain (you are here)
- Deciding where to set the custom domain
- Initiating the custom domain setup (at the organization, collection, or space level)
- Configuring DNS
- Confirming the custom domain setup {% endhint %}
Only subdomains can be used to serve your GitBook documentation. It’s not possible to use an apex domain.
Here are some examples of what you could and could not choose — just replace example.com with your own domain:
| Domain type | Example | Supported? |
|---|---|---|
| Apex domain | example.com |
❌ |
www subdomain |
www.example.com |
✅ |
| Custom subdomain |
|
✅ |
Once you have chosen your custom domain, you’re ready to move onto the next step: deciding where to set the custom domain.