Privacy-first AI subtitle generation
Privacy by design
Your video never leaves your device. Only audio is sent for AI processing and deleted immediately after.
Two-phase AI
Deepgram transcription + Google Gemini translation for accurate, timestamped subtitles.
Built in Czechia
Developed by Zonix Corp s.r.o. in the Czech Republic since 2025.
SublyAI was created to make professional video translation accessible to everyone without compromising privacy. Most tools upload your video to the cloud; we process everything directly in your browser, so your footage never leaves your device. No subscriptions, no queues — just accurate subtitles in minutes.
SublyAI combines two specialized AI models: Deepgram for word-level accurate transcription and Google Gemini for translation and refinement. Video processing and export run entirely client-side using the WebCodecs API — your video never touches our servers.
SublyAI is built and operated by Zonix Corp s.r.o., a company based in the Czech Republic. Founded in 2025, we focus on privacy-first media tooling that respects both creators and their audiences.
For business or press inquiries, contact us at:raxtor7@gmail.com