Is your extension name available?

Check a browser extension name on the Chrome Web Store and Firefox Add-ons in one go. If it's taken, you'll get similar names that are still available.

What is this?

Picking a name for a browser extension is harder than it looks. A name that's available on one store is often already used on the other. This tool checks both at once, so you can pick a name that works everywhere before you publish.

Chrome Web Store

We search the store and look for an extension with the same name. Chrome has no public lookup, so this is a best guess.

Firefox Add-ons

We check the exact web address name (like tab-tidy). Each Firefox add-on has a unique one, so this answer is reliable.

Good to know

  • Similar names are made from simple variations like "-pro" or "get-". No AI involved.
  • Results are remembered for 15 minutes, and names are checked one at a time to go easy on both stores.
  • "Available" means we found no match. It doesn't reserve the name for you.