It took me a little while to find out what all this extension will do but once I did I was impressed! Here's a few highlights. Double click on a word or highlight multiple words for the icon to pop up, you can even tell the addon where to place the icon. If a single word is in your native language it will give you a definition. The definition is extensive and even gives synonyms. For a single word or multiple words you can translate it to another language. It also translates a word or multiple words in another language to your own language. All this is with a voice option to hear it pronounced in the language of your choice. If you go to a page that is entirely in another language and wish to translate it just right click and choose to translate the page. There are numerous ways to achieve different tasks. Just explore and have fun. It's a fantastic extension that works flawlessly. Thanks for the best translator I've ever run across.