Close Tabs Shortcuts โดย mortalis

This addon is a migration of the Close Other Tabs Shortcuts for Firefox 57+.
It allows to use shortcuts to close tabs.

The default shortcuts:
- Close Other (Alt+W) - closes other tabs except the current one.
- Close Left (Alt+Shift+F1) - closes all tabs to the left of the current one.
- Close Right (Alt+Shift+F2) - closes all tabs to the right of the current one.

Starting from Firefox v66 these shortcuts can be changed in the Add-ons Manager (Ctrl+Shift+A) selecting the Manage Extension Shortcuts menu in the page settings.

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For support please use the Support Site link on this page and create an issue on the GitHub.
I'll try to answer it as soon as I can.
Thank you.