Privacy Policy — Nihongo Tint

Last updated: 2026-05-26

Nihongo Tint is a Chrome browser extension that helps Japanese learners read Japanese text on the web. This policy explains what data the extension handles and what it does not.

Data we do NOT collect

Nihongo Tint does not:

Collect, transmit, or store any personally identifiable information (name, email, address, IP, etc.)
Track which websites you visit
Track which words or sentences you look up
Send your browsing activity to any server we operate
Use cookies, fingerprinting, or analytics scripts
Sell, share, or transfer any data about you to third parties

Data stored locally on your device

The extension stores a small amount of preference data in your browser's local storage (chrome.storage.local). This data never leaves your device. Specifically:

Per-site enable/disable preference — so you can turn the extension off on specific domains
A randomly generated installation identifier — used internally for future personalization; never transmitted today
Voice and display preferences — your selected color palette and audio preferences

You can clear this data at any time by removing the extension or visiting your browser's site-data settings.

Third-party services Nihongo Tint may contact

The extension makes requests to public, unauthenticated APIs when you actively interact with it:

Service	Purpose	When
jisho.org	Looking up dictionary definitions	Only when you click a highlighted Japanese word
tatoeba.org	Fetching example sentences	Only when you click a highlighted Japanese word
Chrome Built-in AI APIs (Gemini Nano, on-device)	Generating vocabulary flashcards and comprehension quizzes	Only when you click "Vocabulary flashcards" or "Comprehension quiz"
Chrome Built-in Translator API (on-device)	Translating English text to Japanese on YouTube	Only on YouTube pages when enabled
Browser SpeechSynthesis (on-device)	Reading words aloud	Only when you click a play button

These requests contain only the specific word or text you asked to look up or play. They do not include your identity, browsing history, or any other context.

All Chrome Built-in AI requests run entirely on your device — they do not contact Google's servers.

What the extension reads from web pages

To color-code Japanese parts of speech, the extension reads the visible text of pages you visit using standard browser content-script APIs. This reading happens entirely in your browser; the text is never transmitted anywhere by us.

Children's privacy

Nihongo Tint does not knowingly collect data from anyone, including children. There is no account system.

Changes to this policy

If we change this policy, we will update the "Last updated" date and post a notice in the extension's Chrome Web Store listing.

Contact

Questions: hello@lingotint.com

You can also report concerns via the extension's Chrome Web Store listing page.

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