How to add a custom domain to a Bubble app

The short version: You add a custom domain to a Bubble app by going to Settings → Domain & Email, entering the domain you want, and then adding the exact DNS records

What You Actually Do

In Bubble, your custom domain only works when two things are correct: (1) you’ve added the domain inside Bubble, and (2) your registrar has the correct DNS records Bubble gives you. DNS is basically the “address book” of the internet — it tells browsers where your Bubble app lives.

• Open your Bubble app → go to Settings.
• Open the Domain & Email tab.
• Find the section called Set up your domain.
• Enter your domain, like www.mysite.com. Bubble will automatically add the root domain if needed.
• Bubble now shows you the DNS records to copy. These are usually:
  • a CNAME for www
  • an A record for the root domain (mysite.com)
• Go to the website where you bought your domain (your registrar).
• Find their DNS settings or DNS management page.
• Add the exact records Bubble shows. Do not change the hostnames or values.
• Save. DNS may take from a few minutes up to a few hours to update.

What to Check If It Doesn’t Work

Bubble has a real-time checker in Settings → Domain & Email. It will show a green check once your DNS is correct. If it’s still red after an hour, check:

• You don’t have old DNS records pointing to other hosts.
• No extra CNAME for “www”. You can only have one.
• If using Cloudflare, set the DNS records to DNS only (gray cloud), not proxied.

Example of DNS Records

This is only an example. You must copy the values Bubble gives you.

// Example only
// Host: www → CNAME → app.bubble.io
// Host: @   → A record → 104.19.240.93

Once DNS matches Bubble’s instructions, your app goes live automatically and Bubble handles the SSL certificate for you.