It works, one have to allow it to run in private tabs

Супер! То что надо! Работает исправно!

Nice and useful add-on! But the color of the icon on the button is displayed incorrectly when the browser starts. And it would be nice to make the automatic selection of the proxy mode when the browser starts.

This add-on contains all the necessary options for "normal" usage, that is, when you need to access the Internet through a specific proxy. It's almost the same as setting the proxy on Firefox's options, but much easier, with the added functionality to black list (exclude) sites that require direct access. It's reasonably light on resources (less than 200 kB in size).

very good, works well, easy and useful.
and :
1, how to disable notifications when switching proxy? feel it is not necessary.
2, could you pls add a function to easily switch between several manual proxies, eg. 127.0.0.1:8458, 111.111.1111.111:1111, etc.

Simple, but it works!

Muy cómodo.
Le vendría muy bien un botón "Recargar" para el PAC script.