Can I use my own domain for Cloudflare's custom error pages on the free plan?

Yes, you can use your own domain for Cloudflare's custom error pages on the free plan. When you upload your custom HTML file for an error page, Cloudflare will serve it using your domain's subdomain (e.g., `yourdomain.com/error/404.html` if you upload a custom 404 page). Visitors will see your domain in the URL, providing a consistent brand experience.