I’m happy to say that I’ve made my first Firefox Add-On. It is simply called FF Image Search. It allows you to easily right click on an image and run it through Google Image Search.
I have found it to be especially useful for fact-checking memes on social media. Just right click on the image, click “Search image on Google”, and find out where that meme came from. It usually turns up articles from blogs like Snopes debunking or clarifying the meme.
Here is a quick video showing how to use it. The video doesn’t have any sound.
You can also grab the source code on GitHub