I use Ctrl+Shift+Q for other purpose,

enter image description here

so when I use it, the Firefox would close all things which is very annoying for me.

I tried to change the short cuts, but

enter image description here

Is it still possible for me to change the quit shortcut? Thanks!

  • Have you tried the firefox extension called 'Customizable Shortcuts from Mozilla'?
    – Mastaxx
    May 21, 2018 at 14:07
  • Is that extension present?
    – Biswapriyo
    May 21, 2018 at 14:16

1 Answer 1


If you are willing to edit the installed browser/omni.ja file (~10 minutes of work) or compile your own (~2-3 hours), then it's possible.

There are XUL files, where all these bindings are defined and it's relatively easy to change them, once you get a hang of it.

For a detailed description of both options (editing the downloaded binary or compiling your own), you can consult a very detailed description that I wrote recently when I wanted to do the same: https://github.com/nilcons/firefox-hacks

  • 2
    Welcome to Super User. Without actually providing the steps one must take, there is no answer in this post. Please edit your post to include this information, including the essential content of linked material. Dec 23, 2018 at 21:13

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