Nihongo Tint

Read more Japanese, more confidently. Nihongo Tint highlights every Japanese word on the page by its grammatical role — particles in one color, verbs in another, nouns in a third — so the structure of every sentence is visible at a glance. No popups, no setup, no API keys. Just open a page and start reading. WHAT IT DOES ★ Always-on grammar tinting. Particles, verbs, nouns, adjectives, adverbs, auxiliary verbs, conjunctions, and more — each gets its own color across every page you read. ★ Click-to-lookup sidebar. Tap any tinted word to see its dictionary definition (Jisho), reading, romaji, and example sentences (Tatoeba) — all in one place. No need to leave the page. ★ Sentence context. When you click a word inside a YouTube comment, the sidebar shows the whole sentence with your clicked word highlighted, plus a play button to hear it aloud. ★ Built-in audio. Click ▶ to hear any word or sentence read aloud. Uses your browser's built-in voice — no network calls, no API costs. ★ AI-powered vocabulary flashcards. Open the popup and tap "Vocabulary flashcards" to extract topic-specific words from whatever you're reading. Powered by Chrome's on-device Gemini Nano — completely private, no data sent anywhere. ★ AI comprehension quizzes. Test whether you actually understood what you read. Same on-device AI, free and offline. ★ YouTube-aware. Color-codes captions, English→Japanese translation overlays on comments, focuses content to what you're actually watching (skips the recommended sidebar). ★ Per-site toggle. Turn the extension on and off per domain with one click. WHO IT'S FOR Japanese learners at any level. Beginners get a visual scaffold for grammar; intermediates get instant lookups without breaking flow; advanced readers get fast vocab and comprehension drilling on real-world content. PRIVACY Nihongo Tint does not collect, transmit, or sell any personal data. The extension stores a few preferences locally on your device and never sends them anywhere. Dictionary lookups go directly from your browser to Jisho's public API. AI features run entirely on-device using Chrome's Built-in AI — no servers involved. FREE TO INSTALL, NO ACCOUNT REQUIRED The whole v1 experience is free: tinting, dictionary lookup, sidebar, audio playback, AI flashcards, comprehension quizzes. No ads, no tracking, no required subscription. The core experience stays free forever. A future release may add optional credit packs for premium cloud voices (high-quality Google TTS) — those have a real per-use cost. Everything that costs nothing to run stays free. OPEN TO FEEDBACK This is a working solo-developer project. If something breaks or you have an idea, reach out via the support email — we read everything.