MaruComprehension 作者： MaruComprehension

Unofficial MaruMori app: Vocab highlighting for subtitles/transcripts with dictionary tools on Netflix, YouTube, and Japanese sites

MaruMori comprehension: Unofficial MaruMori.io helper extension for Japanese subtitled videos.

Colored subtitles with per word hover definitions, and a wordlist overview sidebar that shows all words and kanji in sorted by JLPT level, known/unknown status and frequency of the word or kanji in the video or transcript. Built and tested for Comprehensible Japanse (cijapanese.com), Nihongo-Jikan (nihongo-jikan.com), Netflix (netflix.com) and YouTube (youtube.com) where subtitles in Japanese are available.
There is also a built in "Local Player" feature which allows the user to play a local video file with a subtitle file and have that color code according to MaruMori knowledge.

Recently added features include "unknown words" historylog and recently watched videos.
A user can also set words as known inside the extension itself in case and the ability to export all this into a csv or linked towards MaruMori for studylist import.