What changes, and what doesn't
A custom domain changes what appears in the URL itself; it doesn't change how the link functions. Clicks are still tracked, the destination still redirects the same way, and the link is still managed through the same dashboard — the only difference is that the address a visitor sees starts with your own domain instead of a shared one used by every other customer of the shortening service.
Why it matters for trust and click-through
A link that starts with a recognizable brand name reads as more trustworthy than one on a generic, shared domain — especially in contexts like email, where unfamiliar-looking links are a common phishing red flag and recipients have learned to be cautious. A branded domain signals that a link genuinely came from the organization it claims to, which measurably affects whether people are willing to click it.
How it works technically
Setting up a custom domain typically means adding a CNAME (or sometimes an A record) in your domain's DNS settings, pointing your chosen domain or subdomain at the shortening service's servers. Once that DNS record propagates — usually within a few hours — the shortening platform recognizes traffic arriving on your domain and serves redirects from it exactly as it would from its own default domain.
A subdomain vs. a whole new domain
Most people use a subdomain of a domain they already own — link.yourbrand.com — since it's simpler to set up and doesn't require purchasing anything new. Others buy a separate, often shorter domain specifically for links (yourbrand.link or similar short TLDs), which can look cleaner and is easier to say aloud, at the cost of managing an additional domain registration.
SSL and HTTPS are part of the setup, not optional
Any custom domain used for links should be served over HTTPS — most shortening platforms, Shorter.gg included, handle SSL certificate provisioning automatically once the domain is verified, so this typically doesn't require separate action beyond completing the DNS setup. A link served without HTTPS will trigger browser warnings that undermine exactly the trust a custom domain is meant to build.
Common setup mistakes
The most frequent issue is a DNS record pointed at the wrong target, or added at the wrong level (the root domain instead of the intended subdomain, or vice versa) — double-checking the exact record type and value against the platform's instructions before saving avoids most of these problems. The second most common issue is simply not waiting long enough for DNS changes to propagate before assuming something is broken; this can genuinely take a few hours.
Choosing a domain that will age well
Short, easy to type, and easy to say out loud during a conversation or presentation all matter more than they might seem to at first — a domain that requires spelling out character by character defeats much of the purpose. It's also worth picking something that will still make sense years from now, rather than tying it to a specific campaign or product name that may not last.
What happens to links you already created
Adding a custom domain after you've already been creating links on the default shared domain generally doesn't retroactively change those existing links — they keep working on the domain they were created on, while new links can be created on the custom domain going forward. Some platforms offer a way to migrate old links to the new domain if you want full consistency, but it's not required for existing links to keep functioning.
Custom domains and click-through data
A recognizable domain doesn't just affect whether someone clicks — it can affect how they behave afterward too, since a link that visibly matches the brand it came from sets clearer expectations about what's on the other side of the click. Some teams also find it useful to run split tests comparing click-through rates between a generic shortener domain and a branded one for otherwise identical campaigns, which tends to make the trust effect concrete rather than theoretical.
One domain or several
Larger organizations sometimes set up more than one custom domain — separate ones for different brands under the same company, or separate ones for internal versus customer-facing links — rather than funneling everything through a single domain. This is entirely optional and mostly a matter of organizational clarity; a single custom domain is more than sufficient for most individual users and small businesses, and additional domains can always be added later if the need arises.
Custom domains are not the same as a vanity slug
It's worth distinguishing a custom domain from a custom slug (the part after the domain, like /summer-sale). A custom domain changes the yourbrand.com portion of the link; a custom slug changes the /summer-sale portion. The two are independent and typically both available on the same platform — you can have a fully generic domain with a custom slug, a branded domain with a random slug, or both a branded domain and a custom slug together for the most polished result.
When it's worth the setup effort
For a one-off personal link shared occasionally, a custom domain is probably more setup than the situation calls for. For anything sent at volume — marketing emails, ongoing social campaigns, printed materials meant to last — the trust and brand-recognition benefit tends to compound with every additional link shared, which is usually enough to justify the modest one-time DNS setup involved.