MaruComprehension by MaruComprehension
Unofficial MaruMori app: Vocab highlighting for subtitles/transcripts with dictionary tools on Netflix, YouTube, and Japanese sites
Available on Firefox for Android™Available on Firefox for Android™
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About this extension
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.
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.
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Permissions and data
Required permissions:
- Display notifications to you
- Access your data for cijapanese.com
- Access your data for www.cijapanese.com
- Access your data for nihongo-jikan.com
- Access your data for www.nihongo-jikan.com
- Access your data for news.web.nhk
- Access your data for www.youtube.com
- Access your data for www.netflix.com
- Access your data for www.crunchyroll.com
- Access your data for marumori.io
Optional permissions:
- Access your data for public-api.marumori.io
- Access your data for marumori.io
- Access your data for www.marumori.io
- Access your data for cijapanese.com
- Access your data for www.cijapanese.com
- Access your data for nihongo-jikan.com
- Access your data for www.nihongo-jikan.com
- Access your data for www.youtube.com
- Access your data for jisho.org
- Access your data for www.netflix.com
- Access your data for news.web.nhk
- Access your data for www.crunchyroll.com
- Access your data for accounts.google.com
- Access your data for oauth2.googleapis.com
- Access your data for www.googleapis.com
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.6.5
- Size
- 16.53 MB
- Last updated
- a day ago (Jul 24, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
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