What changes and what stays put
A Medium username change is not a single switch with one outcome. It affects three link types differently, so the useful preparation is a small inventory rather than a leap into settings.
Medium lets users change their username through the Username and subdomain setting. Source
That setting is the entry point for the username change itself. The subdomain option sits alongside it but is a different change with a different result, covered below.
After a Medium username change, the old profile URL stops showing that profile, while story links redirect and existing mentions continue to work. Source
Read that sentence carefully, because the three clauses are not equally reassuring. The old profile address stops showing the profile. Story links redirect. Mentions keep working. Only the first is a loss of the old address as a destination.
Enabling a Medium subdomain is a separate change: the earlier profile URL redirects to the subdomain profile. Source
So a reader who enables a subdomain should expect the earlier profile URL to redirect to the subdomain profile, which is not the same outcome as changing the username alone.
Build the link inventory before you touch settings
Open a plain worksheet with one row per link you own or rely on. The goal is to know, in advance, which links you can edit and which you can only observe afterward.
| Link type | Example | Can you edit it? | What to expect after the change |
|---|---|---|---|
| Profile URLs you control | Your site bio, newsletter footer, saved bookmarks, social bios | Yes, if you have access | Old profile URL stops showing the profile; update to the observed new URL |
| Story links | Links to your published stories from anywhere | No, if held by others | They redirect; no edit needed on your side |
| Existing mentions | Another person’s post or page naming your handle | No, if held by others | They continue to work |
| Subdomain-related profile links | Links to the earlier profile address after enabling a subdomain | Depends on who holds them | The earlier profile URL redirects to the subdomain profile |
Columns worth adding: where the link appears, who controls that page, the date you last checked it, and the observed result after the change. Leave the result column blank until you have actually looked.
Two limits belong in the worksheet header. First, you cannot edit a link on someone else’s page, so record those as observe-only. Second, this worksheet is not a search-visibility plan: nothing here promises that search engines will reindex anything, and the reviewed facts say nothing about ranking or reindexing timing.
Step-by-step: make the change, then check each type
- Fill the inventory first. List your owned bios and bookmarks, the story links you know about, and any mentions you are aware of. Note which are yours to edit.
- Open the Username and subdomain setting in your Medium account settings and change the username there. Do not treat this as the same action as enabling a subdomain; decide separately whether you want the subdomain change at all.
- Record the new profile URL exactly as it appears after the change. Copy it from the address bar rather than reconstructing it by hand.
- Check the old profile URL. Confirm what it now shows. The reviewed facts say it stops showing that profile; note what you actually see.
- Check one or two story links from your inventory. They should redirect. Note the result rather than assuming it.
- Check a known mention if you have one you can view. Existing mentions continue to work.
- Update only what you control. Replace the old profile URL with the observed new one in your own bios, bookmarks and saved links. Leave third-party pages alone; you cannot change them, and the reviewed facts do not say they will update themselves.
- If you enabled a subdomain, recheck the earlier profile URL and confirm whether it now redirects to the subdomain profile. Keep this result in its own row so it is not confused with the username-change result.
A hypothetical example of the worksheet in use: a writer lists a personal-site bio, a bookmark folder, two story links shared in a newsletter, and one mention in a community thread. After the change, the bio and bookmark are edited to the new URL, the two story links are noted as redirecting, and the mention is marked observe-only. Nothing is claimed about how quickly any external page or search result reflects the change.
Failure paths to plan for
- You edited a link you do not control. You cannot change third-party pages. Record them as observe-only and move on.
- You expected the old profile URL to redirect after a username change. The reviewed facts describe it as no longer showing the profile; the redirect behavior is described for the subdomain change instead. Keep the two cases in separate rows.
- You assumed mentions would break. They continue to work, so no repair is needed there.
- You treated the change as a cleanup of account data. A username change is not an export or a deletion task. If your actual goal is to take your writing elsewhere or retire a profile, that is a different job: see the related account-control guide.
- You looked for search reindexing confirmation. The reviewed facts do not cover it, so leave that column out rather than filling it with a guess.
What a username lookup can and cannot do here
A public username search is a separate activity from account settings. It can surface public profiles that use a handle, but it does not open your Medium settings, change a username, recover an account, or prove that a profile belongs to a particular person. Treat any match as a lead to check, not as confirmation.
If part of your goal is to see where a name or handle appears publicly, that is a reasonable companion task after you have finished the link inventory: review your public account footprint. TraceSeek, the app covered by this publication, searches usernames across 3,000+ platforms, and the first scan is free with no registration or login required; its stated scan time is 20–30 seconds. Those are product statements, not independent measurements, and a scan result is not proof of identity or ownership.
A short recap
Inventory first, change the username in the Username and subdomain setting, then check each link type against what the reviewed facts actually say: the old profile URL stops showing the profile, story links redirect, mentions keep working, and a subdomain change makes the earlier profile URL redirect to the subdomain profile. Update only the links you control, and do not promise yourself or anyone else a reindexing outcome.