The best URL shorteners with custom domain support
Custom domain support ranges from "one domain on a paid tier" to unlimited. That range decides who can actually use it.
By ShortFreeURL Team · 4 July 2026
Why this is the feature that matters most
A custom domain is the only thing that makes your links portable. Everything else — analytics, targeting, QR styling — can be replaced. Links on someone else's domain cannot be moved, ever.
How vendors gate it
The common pattern is one domain on the entry paid tier, more on higher tiers. Some charge per domain. A few include unlimited domains, which matters for agencies running client campaigns.
Apex vs subdomain support
Not every platform handles apex domains (brnd.co) as well as subdomains (go.brand.com). If you bought a short domain specifically for links, check that apex A records and www CNAMEs are both supported before you buy the plan.
SSL handling
Automatic certificate issuance and renewal should be included and invisible. Ask whether you can upload your own certificate — some organisations require it, and only a few platforms allow it.
Multiple domains in practice
Agencies need one domain per client. Multi-brand companies need one per brand. International teams often want one per market. If any of these describe you, unlimited domains is not a luxury.
What to test on day one
Add the domain, verify DNS, create a link, open it on mobile data rather than office Wi-Fi, and check the SSL certificate name. Five minutes, and it catches every common misconfiguration.