A Chrome extension to keep only one new open at all times, closing extra ones.This extension will close extra New Tab pages that are open whenever you open or close another tab. It will ignore the currently focused tab.
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Icons by Linh Pham Thi Dieu
http://linhpham.me/
Project released open-source, Github project available:
https://github.com/theborg3of5/CloseExtraNewTabs
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Please note that this was made for personal use, so replies and fixes may be delayed.
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Changelog:
1.0: Initial Release - split functionality off from "Keep One Pinned Tab" (also made by this developer).
1.1: Bugfix: now actually works!
2.0: Rewrote from scratch, should now be more reliable.