Close Extra New Tabs is a Chrome extension developed by Gavin Borg. This free extension falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. Its main purpose is to keep only one new tab open at all times, automatically closing any extra ones.

With Close Extra New Tabs, you no longer have to worry about accidentally opening multiple new tabs and cluttering your browser. Whenever you open or close a tab, this extension will automatically close any extra new tab pages that are open, except for the currently focused tab.

The developer, Gavin Borg, has made this extension available as an open-source project on GitHub. It was initially released as version 1.0, which was split off from another extension called "Keep One Pinned Tab" also developed by Gavin Borg. Version 1.1 addressed a bug and ensured the extension actually works. In version 2.0, the extension was completely rewritten to improve reliability.

Close Extra New Tabs is a handy Chrome extension for those who want to keep their browser organized by automatically closing extra new tabs.