This extension does not work in the regular version of Firefox. Make sure to use following browsers. Tested browsers * Floorp (Recommended) * Firefox Nightly * Firefox Developer Edition * Librewolf * Zen browser Except for Floorp, value of xpinstall.signatures.required have to set false in about:config. Caution Installing untrusted extensions can pose a serious security risk. Developer will not responsible for any damage caused by the user's actions. Always act prudently and at your own risk. Source code https://github.com/FoxRefire/ChromeXPIPorter