iyaku Japanese Reader by max
Grammar, dictionary, and furigana helper for reading Japanese on the web.
ExperimentalExperimental
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
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About this extension
This extension uses the Sudachi lexical analyzer and the Mozilla Readability.js library to identify the main content of any page and, when the extension is activated, all Japanese text in the main content will be parsed and highlighted. Words matching known dictionary entries or grammar rules (currently JLPT N4/N5/N3 is supported) are underlined in blue. Hovering over words will let you view definitions, part of speech categories, and grammar explanations.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 0.0.5
- Size
- 47.75 MB
- Last updated
- 2 days ago (Mar 7, 2026)
- Related Categories
- License
- MIT License
- Version History
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