Note: this will be available in upcoming 3.4 release. For now you can get this functionality in pre-release version.
Since version 3.4 you can add new keyboard shortcuts or re-assign a shortcut to a different command.
To customize keyboard shortcuts:
An example of customization:
Shortcuts [
	[
		Cmd = CmdOpenFolder
		Key = Alt + O
	]
	[
		Cmd = CmdOpen
		Key = x
	]
	[
		Cmd = CmdNone
		Key = q
	]
]
Explanation:

Format of Key section:

Commands

You can see a full list of commands.

Notes

The changes are applied right after you save settings file so that you can test changes without restarting SumatraPDF.
There is no indication if you make a mistake (i.e. use invalid command or invalid syntax for Key).
If the shortcut doesn’t work, double-check command name and keyboard shortcut syntax.

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