BunSense: Japanese Furigana, translation, and grammar helper

Tracking since Apr 1, 2026.

Changelog

• May 14, 2026
  description

  === What's New in Version 1.1.0 ===
  
  Voice feature (BETA) — Listen to Japanese text read aloud with natural AI voices or built-in browser speech. Play, pause, and resume right from the floating bar.
  Redesigned Floating Bar UI — Clean icon-only look with tooltip labels on hover. Bar now stays visible while overlays are open.
  Toggle Overlays — Click any feature button again to close its overlay, consistent across all features.
  Bug Fixes — Fixed bugs including floating bar flashing on close, branding icon hiding the bar, and API key inputs triggering browser password popups.
  
  ────────────────────────
  
  Read Japanese with confidence, right on the page.
  
  BunSense helps you understand Japanese text as you read. It adds furigana to kanji, provides instant translations, and explains grammar directly on any website, so you can stay focused without switching tabs or apps.
  
  The name BunSense comes from 文 (bun), meaning “sentence” or “text,” and sense, meaning “understanding” or “intuition.” It reflects the idea of developing a natural feel for Japanese through real reading.
  
  What BunSense can do
  
  Add hiragana readings above kanji with one click
  Translate selected Japanese text into your preferred language (currently supported English, Simplified Chinese and Traditional Chinese)
  Break down grammar patterns and sentence structure
  Save words with JLPT level tag and expressions to a personal vocabulary notebook
  Offer AI-powered explanations and natural phrasing insights
  Work on any website that contains Japanese text
  
  Why use BunSense
  
  BunSense is designed for learning through immersion. Instead of interrupting your reading flow, it supports you in the moment, helping you read articles, study materials, and everyday Japanese more comfortably and confidently.
  
  How it works
  
  Select Japanese text on a webpage
  Open the floating BunSense bar
  Choose furigana, translation, grammar, or dictionary tools
  Learn as you read
  Click the icon button to open the Chat panel, where you can talk with your chosen AI assistant to get natural, conversational or formal Japanese expressions, as well as asking any questions related to Japanese learning

  === What's New in Version 1.1.1 ===
  
  In-Extension Feedback — Send feedback directly from the toolbar popup or sidebar with the message pre-filled.
  Smarter Furigana — improve Furigana accuracy.            
  Color-Coded Grammar Highlights — Grammar points in passages are marked with matching colors and numbered badges, making it easy to pair them with the explanations.                                                                                                                                                           
  Toolbar Popup — Click the BunSense icon in the browser toolbar to quickly show or hide the sidebar.                                                           
  Compatibility Fixes
  ────────────────────────
  
  Read Japanese with confidence, right on the page.
  
  BunSense helps you understand Japanese text as you read. It adds furigana to kanji, provides instant translations, and explains grammar directly on any website, so you can stay focused without switching tabs or apps.
  
  The name BunSense comes from 文 (bun), meaning “sentence” or “text,” and sense, meaning “understanding” or “intuition.” It reflects the idea of developing a natural feel for Japanese through real reading.
  
  What BunSense can do
  
  Add hiragana readings above kanji with one click
  Translate selected Japanese text into your preferred language (currently supported English, Simplified Chinese and Traditional Chinese)
  Listen to Japanese text read aloud with natural AI voices or built-in browser speech
  Break down grammar patterns and sentence structure
  Save words with JLPT level tag and expressions to a personal vocabulary notebook
  Offer AI-powered explanations and natural phrasing insights
  Work on any website that contains Japanese text
  
  Why use BunSense
  
  BunSense is designed for learning through immersion. Instead of interrupting your reading flow, it supports you in the moment, helping you read articles, study materials, and everyday Japanese more comfortably and confidently.
  
  How it works
  
  Select Japanese text on a webpage
  Open the floating BunSense bar
  Choose furigana, translation, grammar, or dictionary tools
  Learn as you read
  Click the icon button to open the Chat panel, where you can talk with your chosen AI assistant to get natural, conversational or formal Japanese expressions, as well as asking any questions related to Japanese learning

Permissions & access

Permissions

storage

Host access

https://*/*, http://*/*

Screenshots

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