> ## Documentation Index
> Fetch the complete documentation index at: https://hercules.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Publish to a free Hercules subdomain

> Publish to [myapp].onhercules.app for free. One domain per app. Upgrade to custom domain when ready.

<Tip>
  Users on paid plans can also [buy a domain](/apps/publish/buy-domain) directly in Hercules or
  [connect an existing domain](/apps/publish/connect-existing-domain) they already own.
</Tip>

All Hercules apps can be published to a free Hercules domain at `[myapp].onhercules.app`. For a custom domain, [buy one in Hercules](/apps/publish/buy-domain) or [connect an existing domain](/apps/publish/connect-existing-domain).

### How do I publish my app to a free `[myapp].onhercules.app` domain?

Click **Publish** in the top right corner of the App Builder, then enter a custom subdomain name.

<div className="screenshot peach">
  <img src="https://mintcdn.com/zeus-0f6dadbf/vyfZOWPi9KdyCPiO/images/apps/publish-add-a-domain.png?fit=max&auto=format&n=vyfZOWPi9KdyCPiO&q=85&s=4537a19f70d2e7fe505956e583fc7c7b" alt="Add a custom domain" width="844" height="566" data-path="images/apps/publish-add-a-domain.png" />
</div>

### Can I change my Hercules domain?

Yes. Click publish, then click the pencil icon next to your subdomain. It will unpublish your app, then allow you to change your domain, then republish.

<div className="screenshot ocean">
  <img src="https://mintcdn.com/zeus-0f6dadbf/vyfZOWPi9KdyCPiO/images/apps/publish-after.png?fit=max&auto=format&n=vyfZOWPi9KdyCPiO&q=85&s=8764f29414ded402e70bf44791e6c9a8" alt="Change free domain" width="824" height="458" data-path="images/apps/publish-after.png" />
</div>

### How many Hercules domains do I get?

Currently, unlimited Hercules domains, but one per app.

### How do I publish to my own domain?

<CardGroup cols={2}>
  <Card title="Buy a domain in Hercules" icon="cart-shopping" horizontal href="/apps/publish/buy-domain" arrow />

  <Card title="Connect an existing domain" icon="globe" horizontal href="/apps/publish/connect-existing-domain" arrow />
</CardGroup>

## Additional FAQ

<AccordionGroup>
  <Accordion title="I am not seeing my publish site">
    1. Check that you published the latest version
    2. Check that it is not flagged as spam (see below)
  </Accordion>

  <Accordion title="My antivirus is flagging the onhercules.app site as spam (e.g. Avast, AVG, Norton)">
    Sometimes your antivirus software provider can block `*.onhercules.app`, `hercules.app`, `*.hercules.app`, `hercules-cdn.com`, and `hercules-dev.com` domains. You may see errors like `ERR_QUIC_PROTOCOL_ERROR`, "connection not encrypted", `ERR_SSL_PROTOCOL_ERROR`, or SSL certificate warnings in your browser.

    **Solutions:**

    1. Add `*.onhercules.app`, `hercules.app`, `*.hercules.app`, `hercules-cdn.com`, and `hercules-dev.com` to the allowlist/denylist settings in your antivirus software
    2. Report the site as a false positive to your antivirus provider
    3. [Purchase a domain through Hercules](/apps/publish/buy-domain) to use your own domain instead

    * You can get an .xyz domain for \$3

    4. [Contact](/company/contact) the Hercules team with your antivirus provider name so we can submit a review
  </Accordion>
</AccordionGroup>