This extension automatically loads Amazon Smile (using HTTPS) when you navigate to an Amazon page, in order to donate a portion of your purchase to the charity of your choice. Amazon.com, amazon.co.uk, and amazon.de are supported, which are the only three Amazon country sites that support Smile as of November 2017. If you think the extension is not working, because the URL is still a plain Amazon URL like "amazon.com", it may be because you are not logged in to Amazon. When you're not logged in, Amazon handles a smile request by sending you to a normal Amazon page with an extra message near the top of the screen that says AmazonSmile is a program where Amazon donates to your favorite charity. Support your charity when you shop. Sign in to AmazonSmile. Once you click the Sign in to AmazonSmile link and sign in, then you'll see the URL change to the Smile version. This extension asks for only the minimum privileges needed to redirect requests for the following sites :

Feedback and suggestions for improvement are welcome. This is my first Firefox extension.