First, to answer Bill Baldwin's review, the place to add keywords is by clicking on the jigsaw icon for Extensions, then clicking on ElementHider or pinning it and then clicking on it.

Have found this extension to work like a charm and is perfect, if one is so inclined, to hide promotions of certain AI features and to hide certain AI-related elements (like overviews and summaries) one cannot opt out of.

やりたかったことが完璧にできました。拡張機能をクリックしてキーワードを入力し、拡張機能の設定から適用するURLを入力することで機能しました。テストモードにすると消す要素が緑枠で表示されるので問題なければテストモードのチェックを外してページを更新(F5)してください。

It works flawlessly on Android & Computer

There is nowhere to enter keywords to hide elements. I select Options or Manage and it takes me to the same thing that has Details, Options, Permissions. None of these has a place to enter keywords. Element Hider does not appear in my toolbar or right-click menu. I cannot find any way to use it.

Does a perferct job in hiding elements where sometimes uBlock fails. Thank you!