Is this what you were looking for : https://developer.mozilla.org/en-US/docs/Tools/Keyboard_shortcuts

Please let us know if this solved your issue or if need further assistance.

Which keyboard shortcuts give a problem and do you want to change and for what reason?

cor-el said

Which keyboard shortcuts give a problem and do you want to change and for what reason?

As stated in my original question, I want to change the keyboard shortcut to bring up developer tools. It is set to Cmd + Opt + I and I want to change it to Cmd + Shift + C because that is much more comfortable to me.

Pkshadow said

Is this what you were looking for : https://developer.mozilla.org/en-US/docs/Tools/Keyboard_shortcuts Please let us know if this solved your issue or if need further assistance.

This only lists the keyboard shortcuts, no information about how to change them unless I am missing it?

How about this : https://addons.mozilla.org/en-GB/firefox/addon/s3menu-wizard/

Please let us know if this solved your issue or if need further assistance.

Note that the OP uses Firefox 57 Developer Edition and can't use legacy extensions that have a max-version of 56. DE should be able to use legacy extensions (extensions.legacy.enabled = true), but that doesn't guarantee that the extension will work properly.

I am having the same issue but I was not allowed to reply until I had asked a question, so I asked the same one here: https://support.mozilla.org/en-US/questions/1209040