A pane of clarity on every frame.

Drag a rectangle on any web page. PaneTrans pins a glass popup with live translation that updates the moment the text changes — live chat, video subtitles, ticker text, anywhere.

All translation runs locally on your machine. No cloud. No API keys. Nothing leaves your browser.

See pricing How it works

Live chat · auto-scrolling

Künstliche Intelligenz revolutioniert die Übersetzung.

人工知能がブラウザ翻訳を変える時代が来た。

Traducción local sin nube, en tu navegador.

번역이 로컬에서 실시간으로 작동합니다.

scroll · subtitle · ticker · chat

What PaneTrans actually does

Drag, then watch.

Right-click anywhere → Translate Region → drag a rectangle. A draggable popup shows the original and the translation side-by-side. No menu hunting, no extra clicks — the gesture is the entire UI.

It keeps watching.

A MutationObserver tracks the rectangle. Live chat lines, subtitle changes, ticker updates — the popup retranslates automatically. Like sticking a real-time subtitle strip onto any slice of the page.

Local AI, picked per task.

Free tier: OPUS-MT (~160 MB / pair, real-time on WebGPU) and NLLB-200 / M2M-100 for higher quality. Pro tier: LLM-grade gpt-oss and Gemma 3 for the most fluent output.

Why people who read across languages reach for this

Zero data leaks. Translation models live in your browser cache. No request to a third-party server. Works offline once the model is downloaded.
Persistent, not single-shot. Most translators give you one translation and stop. PaneTrans pins a popup that follows the region until you close it.
Bilingual YouTube subtitles as a separate, opt-in feature for video learners.
Open architecture. Built on Transformers.js + Xenova ONNX models. You can audit the model list in src/utils/languages.js.

Ready to try it?

The Free tier handles real-time translation for 10+ languages. Pro unlocks LLM-grade models for nuanced text.

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