犬々 is a browser extension publisher, most of their extensions are accessibility extension.
December 15th, 2022
Thumbnail Image (Size Type Selection) Download
December 9th, 2022
YouTubeライブチャットで一部を除き、コメント以外を非表示にします。Hide all but comments except in part in YouTube live chat.(DeepL翻訳)
You could send emails to publisher.