Chrome Web Store Official URL dropdown not showing verified subdomain

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Bas Grasmayer

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Mar 16, 2026, 5:27:22 AMMar 16
to Chromium Extensions

I'm trying to set mindfulblock.calmfluffy.cloud as the Official URL for my extension in the Chrome Web Store Developer Dashboard. However, the subdomain doesn't appear in the dropdown — only the root domain, calmfluffy.cloud, does (which I had already added to Search Console).

I have verified mindfulblock.calmfluffy.cloud in Google Search Console in multiple ways:

Both show as verified. It has been several days since verification, so it's not a sync delay issue.

Has anyone managed to get a subdomain to appear in the Official URL dropdown? Is there a specific verification method required, or is this a known limitation?

Thanks!

B

Patrick Kettner

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Mar 16, 2026, 10:30:42 AMMar 16
to Bas Grasmayer, Chromium Extensions
Hi Bas,
Great question! The system the web store uses to confirm that you own a site is the same one that most of Google uses. If you already own the root domain, then you are automatically given control over the subdomains as well, so what you are seeing is the expected behavior. Is there a reason why you want something different?

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Bas Grasmayer

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Mar 17, 2026, 9:07:12 AMMar 17
to Chromium Extensions, Patrick Kettner, Chromium Extensions, Bas Grasmayer
Hi Patrick, 

Thanks for the clarification. Makes sense.

To answer your question: the root domain (calmfluffy.cloud) is my main business website, which I can't use as the URL for this extension because there's simply too much going on on that page. The extension has its own dedicated landing page at mindfulblock.calmfluffy.cloud, and that's the URL I'd like to show in the store listing.

Is there a way to make a specific subdomain appear in the Official URL dropdown, rather than just the root domain?

Patrick Kettner

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Mar 17, 2026, 12:30:08 PMMar 17
to Bas Grasmayer, Chromium Extensions
Gotcha!
I thought you were referring to the groups dropdown in the dev dashboard (for the extension ownership). Theres nothing you can do to get the subdomain showing yourself, but I can work with our team to get it manually set to that value for you.

Patrick Kettner

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Mar 18, 2026, 6:29:14 PMMar 18
to Bas Grasmayer, Chromium Extensions
Hey Bas
Just wanted to confirm that we got the domain through the system, so you should be seeing it as an option now.

cheers
patrick

Bas Grasmayer

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Mar 20, 2026, 3:23:18 AMMar 20
to Chromium Extensions, Patrick Kettner, Chromium Extensions, Bas Grasmayer
Thank you so much!
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