A custom domain is the only part of your link page you actually own.
Every link-in-bio tool gives you an address on their domain. That address works, it is free, and it belongs to them. The day you move tools, it stops being yours, and every post that ever contained it becomes a dead end.
A custom domain removes that problem permanently. It is the one decision in this category that compounds, and it costs roughly the price of a coffee per year.
What you get, beyond the obvious
Migration becomes invisible. If your bio points at your own domain, you can change the tool behind it as often as you like and no post ever breaks. That alone justifies the cost.
Trust improves, modestly but measurably. A link on your own name reads as more established than a link on a shared platform domain, particularly to an audience that has learned to be careful about what it taps.
You stop being a tenant. If a provider changes their pricing, their policy, or their tolerance for what you do, you can move without asking your audience to update anything.
Choosing the domain
Short beats clever. Your domain will be typed on phone keyboards and read aloud in videos, so every extra character costs you.
Avoid hyphens and numbers, which are almost impossible to communicate verbally without spelling them out. Prefer your handle if it is available, because consistency across platforms is worth more than a cute name.
On extensions, ordinary is fine. A .com is easiest for an audience to remember, but nothing is wrong with a country extension or a newer one. What matters is that it is short and that it matches what people already call you.
Setting it up without breaking anything
Buy the domain from any registrar. This step is independent of your link tool.
Add the domain in your link tool's dashboard first, before touching DNS. The tool will show you which records it needs, usually an A record or a CNAME.
Create exactly those records at your registrar. This is the step where people improvise and lose an afternoon: use the values the tool gives you, not values from an article.
Wait. DNS changes propagate on their own schedule, typically minutes but occasionally hours. A domain that does not work immediately is usually not broken.
Confirm the certificate. Your page must load over https with no warning. If the browser complains, the certificate has not been issued yet, and that is a matter of waiting rather than reconfiguring.
Only then change your bio link.
What it costs across the tools
Custom domains are almost universally a paid feature, and where they sit in the pricing varies more than you would expect.
On some tools they appear on the entry paid tier. On others they are reserved for the highest plan, which can mean paying several times more for that one capability. Campsite puts them on paid plans from around seven dollars, Milkshake on its Pro+ tier, Solo.to on Professional only, and Shorby on Pro.
Check the current pricing page of whichever tool you are considering before assuming, because this is one of the features providers move between tiers most often.
Questions
Do I need a custom domain?
Not to get started. You need it the first time you want to change tools without breaking old posts, and by then you will wish you had bought it earlier. It is cheap enough to buy in advance.
Will a custom domain help my search rankings?
For a link page, only marginally, because link pages are rarely what people search for. The benefit is control and continuity rather than ranking.
What happens if I stop paying for the link tool?
The domain stays yours, because you bought it from a registrar, not from the tool. You point it somewhere else and everything that referenced it keeps working. That is precisely the point.
Can I use a subdomain instead?
Yes, something like links.yourname.com works and is a common setup, particularly if the main domain already hosts a website. The instructions from your tool will differ slightly, usually a CNAME rather than an A record.
How long does setup take?
Ten minutes of work and then an unpredictable wait for DNS and the certificate, which is usually minutes and occasionally hours. Do it on a day when you are not about to launch something.
HeyBio supports custom domains on Pro, and every plan gives you the shorter heybio.io/yourname in the meantime.
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