全く役に立たないのでダウンロードしないほうがいいです。
コイツで画像検索できたためしがない。
画像検索して出てくるのは「エラーが発生しました
この URL には画像がありません。別の URL または画像でもう一度お試しください。」という文字のみ。

Please add screenshots and descriptions in English.

Does what I need it to do. I can right click an image and have google search for other similar/same images. The English should be "Google Image Search" or "Search for Image using Google."

画像で検索が簡単にできて楽になりました
また、他のアドオンに比べて別のタブに開く所が気に入りました

The perfect replacement for "contextual google image search" add-on.

But maybe the context menu could be shorter? "Search selected text with google image" to "Search text by Google Image"?

FINALLY. This addon is perfect. Works with FF 57. No bullshit extras, just a pure and simple addon that adds reverse Google image search to the right-click menu.

Not as good as the Google Image Search add-on by BringerOfLove, which opens the new tab next to the one with the image being searched, rather than as the last window to the right. The add-on by BringerOfLove also adds the link within the appropriate section of the context window, where this version adds the link to the bottom of the list. The other also has an Icon, this doesn't... but this is compatible with FF57, and it does work.