SingleNewTab by JustSomeGuest

SingleNewTab keeps your tab bar clean by reusing tabs instead of piling up duplicates.

• One New Tab per window — opening another New Tab jumps back to the existing one instead of stacking blanks.
• Website rules — add domains like youtube.com and they stay limited to one tab per window.
• Subdomain matching — optionally treat docs.example.com and example.com as the same site.
• One-click cleanup — remove all existing duplicates instantly from Settings.
• Master on/off switch, per-feature toggles, dark UI with optional sharp corners.

Privacy: everything is stored locally in your browser. No accounts, no tracking, no analytics, no network requests of any kind.