Key takeaways
- Pick one short, memorable subdomain such as trade.yourbrand.com.
- The domain’s DNS must be managed in Cloudflare for Worker delivery.
- Cloudflare issues the SSL certificate automatically once the subdomain is attached.
- Keep registrar and Cloudflare accounts protected with two-factor authentication.
Choosing the subdomain
Common choices are trade., webtrader. and app.. Choose one that is short, easy to say on the phone and clearly yours. Avoid hyphens and numbers that make look-alike domains easier to create.
Moving DNS to Cloudflare
If your domain is not yet on Cloudflare, you add it to a Cloudflare account. Cloudflare scans your existing records, and you replace the nameservers at your registrar with the two Cloudflare nameservers it shows you. Your website and email keep working as long as all existing records were copied.
Attaching the Worker
The WebTrader Worker is attached to the subdomain as a custom domain or route. Cloudflare creates the necessary DNS entry and issues an SSL certificate automatically, usually within minutes.
Checks before launch
- The subdomain opens over HTTPS without warnings.
http://redirects tohttps://.- Your main website and email still work.
- Test logins inside and outside your allowed ranges behave correctly.
Common mistakes
- Forgetting to copy MX records when moving DNS, which breaks email.
- Leaving an old A record on the subdomain that conflicts with the Worker.
- Sharing Cloudflare logins instead of inviting team members with their own accounts.