this addon requires the less permissions than some of the others.
seems to work fine if you need to toggle your connection without going through firefox pref page.

It is an easy to use add-on that I can do what I need. +5
(However, the graphics of the toggle button has one problem. Because it is a transparent icon used only black, it can not be seen under the system theme with a dark background. -1)

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Edit(2018-07-13):
> "svg.context-properties.content.enabled" to true in about:config
This method worked. Thank you. +1

Nice simple, does exactly what is promised.
Can you add a keyboard shortcut though?

Does exactly what promised and nothing more; the code is very short and easy to review.

It's unfortunate that you have to set up the proxy in the add-on settings, but that's a limitation of Firefox itself (the add-ons are no longer allowed to toggle the switch in the browser's settings, since Mozilla's move to WebExtensions).

很好很强大！感谢作者Richard！
Very simple but useful enough. That's just what I want.
Thanks to Richard.

This is what I want. simple and works.

Basic simplicity. THAT'S THE POINT! love it.

Этот аддон делает только то, что от него ожидаешь. Включает и отключает прокси по нажатию на иконку и ничего больше!!! Никаких левых функций!

very very useful，the firefox original proxy settings is too cumbersome

是我想要的。有办法支持快捷键切换吗？

Thank you, it simple and does what i need. And it works in ff57

Works perfectly for me with FF 57.0.2 64-bit! Allows me to switch between my defined proxy and none with a single click! Thanks!

This add-on works great with PIA proxy settings. It seems much faster than using the VPN Client and you can switch instantaneously. Thanks to the developer.

Simply works, super easy setup , one-button-on/off, and supports Socks5 authentication!! Woohoo :)

easy and effective

终于找到一个能在57版本使用的代理切换开关了。我不需要别的复杂功能，我只需要能在直连/代理间切换，别的扩展太复杂了。

这么简单就是我想要的。