This extension is a gift to the AmazonSmile Always program. It changes the link in a product's description page to always use smile.amazon instead of amazon.com for eligible products. This allows you to automatically donate to your favorite charity at no hassle to you.

As soon as you install the extension, you'll notice a tiny icon next to the word "Amazon" on eligible products. When you click on that, a new window will open up. You'll see the name of your favorite charity listed at the top of that window. Once you select your favorite charity, the extension will automatically make sure to donate to that charity whenever you click on the "Buy Now" button.

This extension doesn't track or capture any data, so it doesn't need any permissions other than to use smile.amazon to change the link in eligible products.