01
Selection Translation
Select any text on a page for an instant, streaming translation.
- Instant inline popup
- Context-aware translation
- Fast streaming response
FlashTranslate.Net
Next-generation browser translation extension, powered by your personal LLM key.
Selection translation, full-page translation, and subtitle translation, all in one. Full BYOK — your API key serves only you, and your translation requests never pass through any third-party server.
Chrome (Windows / macOS) · Safari (macOS / iOS, coming soon)
Features
Three core features
From a phrase on the page to an entire article or a video, keep translation inside the way you already browse.
02
Full-page Translation
One click to translate the main content of a page, automatically skipping ads and navigation.
- Translate the page in one click
- Detect the main article
- Leave ads and navigation alone
03
Subtitle Translation
Real-time bilingual subtitles for video (currently YouTube), with smart sentence segmentation synced to playback.
- Real-time bilingual subtitles
- AI-powered sentence segmentation
- Synchronized with playback
FlashTranslate.Net
Why FlashTranslate.Net
01
BYOK: your key, your call
Bring your own LLM provider key (OpenAI, Google, and OpenRouter presets, plus custom models). Pay only for what you use — no markup.
02
Fast: direct connection, zero relay
Translation requests go straight from your browser to your configured LLM provider — no third-party relay, lower latency.
03
Secure: your key is never stored in plaintext
Free-tier keys are protected locally with AES-256-GCM; subscriber keys travel end-to-end encrypted (JWE) and are never written to disk or logs in plaintext, on either side. See the Privacy Policy for details.
04
Smart: more than just translation
Full-page translation identifies the main content and skips sidebars/ads; subtitle translation applies smart segmentation to auto-generated captions instead of rigid word-by-word pairing.
05
Effortless: configure once, use everywhere
Full support on Chrome (desktop) and Safari (desktop + mobile, coming soon) — subscriber configs sync in real time across every platform.
06
The free tier is the full product
Signed-out and free users get all three translation features — no payment required to experience the full capability.