# Page Not Found

The URL `published-documentation/custom-domains/how-can-i-add-a-custom-domain-to-a-docs-site` does not exist.

You might be looking for one of these pages:
- [How can I change the slug in the URL?](https://gitbook.com/docs/help-center/published-documentation/custom-domains/how-can-i-change-the-slug-in-the-url.md)
- [Change or update my custom domain in GitBook](https://gitbook.com/docs/help-center/published-documentation/custom-domains/change-or-update-my-custom-domain-in-gitbook.md)
- [My custom subdomain isn't working](https://gitbook.com/docs/help-center/published-documentation/custom-domains/my-custom-subdomain-isnt-working.md)
- [How can I solve the "path is already taken" error?](https://gitbook.com/docs/help-center/published-documentation/custom-domains/how-can-i-solve-the-path-is-already-taken-error.md)
- [How do I change or replace the favicon for my docs site?](https://gitbook.com/docs/help-center/published-documentation/customization/how-do-i-change-or-replace-the-favicon-for-my-docs-site.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://gitbook.com/docs/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://gitbook.com/docs/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/docs/help-center/published-documentation/custom-domains/how-can-i-change-the-slug-in-the-url.md`)
- Use `Accept: text/markdown` header for content negotiation