Native Translate

Private, local‑first translation using Chrome's built‑in AI Translator & Language Detector. No cloud calls, no telemetry — your content never leaves the browser.

Privacy-first
Open-source
Lightweight
Full-page Translation
Preserves original layout by appending translated text under original blocks. Perfect for reading articles and documents in foreign languages.
Hover-to-translate
Hold a modifier key (Alt/Control/Shift) and hover over paragraphs for instant translation. Translate only what you need, when you need it.
Triple-space Translation
In text fields and contenteditable areas, type three spaces to translate typed content. Perfect for multilingual communication.
Side Panel Translation
Free-text translation with auto-detection. Prefers local APIs, falls back gracefully. Real-time translation as you type.
EPUB File Translation
Upload and translate EPUB files with progress tracking and automatic download. Perfect for reading foreign language books.
Privacy by Design
Zero external translation requests by default. All processing happens locally in your browser with no telemetry or tracking.

Why Choose Native Translate?

Complete Privacy

Unlike cloud-based translation services, Native Translate processes everything locally using Chrome's built-in AI models. Your sensitive documents, private messages, and browsing data never leave your device.

Lightning Fast

With intelligent caching and local model processing, translations happen instantly. Models are cached per language pair, making subsequent translations even faster.

25+ Languages Supported

Support for major languages including English, Chinese, Japanese, Korean, French, German, Spanish, Italian, Portuguese, Russian, Arabic, Hindi, and more.

Open Source & Free

Completely free and open-source under MIT license. No subscriptions, no premium features, no hidden costs. Just powerful, private translation for everyone.

Advanced Features

Smart Translation Technology

  • Streaming Translation: Real-time progressive translation for longer texts with visual feedback
  • Smart Element Selection: Intelligently avoids code blocks, tables, and navigation elements
  • Multi-frame Support: Works in all frames including about:blank pages
  • IME Awareness: Handles Asian language composition events correctly

Technical Excellence

  • Advanced Caching: Per-line and per-language-pair caching with model readiness tracking
  • RTL/LTR Support: Automatic text direction and alignment for target languages
  • Bridge Architecture: Falls back to page-world bridge when content script APIs are unavailable
  • Internationalized UI: Support for 25+ languages via Chrome i18n

Supported Languages

English
Chinese (Simplified)
Chinese (Traditional)
Japanese
Korean
French
German
Spanish
Italian
Portuguese
Russian
Arabic
Hindi
Bengali
Indonesian
Turkish
Vietnamese
Thai
Dutch
Polish
Persian
Urdu
Ukrainian
Swedish
Filipino

Plus auto-detection support for intelligent language identification

Requirements
Chrome 138+ (Manifest V3, Side Panel APIs, Built-in AI)
pnpm 9.15.1+ (for development)

Note: On first use, Chrome may download on-device models. Availability depends on device capability and Chrome's AI feature rollout.

Quick Installation
1
Install dependencies: pnpm install
2
Development: pnpm dev
3
Load unpacked extension in Chrome
Privacy & Security
View detailed Privacy Policy →

Privacy Commitment

  • • No analytics, no tracking, no cloud translation by default
  • • All logic runs inside the browser
  • • Works offline after models are downloaded and cached
  • • Zero data collection or telemetry

Minimal Permissions

  • • storage — persist settings and readiness metadata
  • • activeTab, tabs — interact with the current tab
  • • scripting — inject content script
  • • sidePanel — optional side panel entry

Ready to Experience Private Translation?

Join thousands of users who are already enjoying fast, private, and intelligent translation without compromising their privacy.