Trash. It don't have the option to remove the highlight on selected text. If you select a wrog text to hightlight you have to remove the text from all the page.

使いやすそうなんだけど、何でセーブできないの？

Doesn´t save marked text until next visit, key to mark text is far away from ussability while in work progress: F9? Think the author is not using it himself, cannot think logically and does not have a look how others solve an idea like this. Not for professional use.

Какой смысл в расширении не вижу.. Textmarker Должен сам искать все одинаковые выбранные мною слова и маркировать их. Каждое выбранное слово своим цветом. Хотел использовать вместо SearchWp но, это невозможно.

version 0.8.1 and 0.8.2 does not install in ESR

Correct please.