Live Classroom Captions

Live speech-to-text captioning with on-screen translation overlay for classroom teaching.

Live Classroom Captions turns your speech into live captions and translates them in real time, so every student can follow your lesson in a language they understand. What your students get: Choose the languages your class needs and translated captions appear on screen as you teach, so a student who reads Spanish, Vietnamese, Tagalog, Khmer, or one of 130+ other languages can follow along instead of falling behind. Turn on Room Sharing (a one-time setup) and students also see your captions on their own phones, tablets, or Chromebooks, each in the language they pick. You share one join code, post it in Google Classroom or Canvas, and each student pastes it into the extension once and stays connected all year. A student with several teachers keeps a saved class list and taps to switch between them. What you do as the teacher: Start captions from the toolbar and a caption overlay appears on whatever tab you're presenting, whether that's a Google Doc, a slideshow, a video, or a simulation. Your words appear in English as you speak, with each translation beside them in its own color-coded box. Drag the boxes, resize them, and style them so they sit where they won't cover your content. The captions keep running as you move between tabs. More for real classrooms: * Student response mode: tap the people icon and the mic listens in a student's language, then translates their answer back to English so the whole class can follow. * Accommodation room: open a separate room where a student runs their own captions for a read-aloud test, independent of your main session. * Custom vocabulary: add the terms your subject uses so they translate correctly every time. Some subject specific vocabulary packs are already offered for free! More can be added upon request. * Your choice of recognition: use the free built-in speech recognition, or connect an OpenAI API key for higher accuracy with technical terms - this is a cost to you. Transcripts: Every session saves automatically as a transcript you can edit. Connect Google Drive and each session also saves as a formatted Google Doc with a single click to authorize, no setup required. The extension can only see the files it creates; it never touches the rest of your Drive. Privacy: Audio is processed in your browser by Chrome's built-in speech recognition. This extension never records, uploads, or transmits your audio. Only the resulting text is used. See the privacy policy for details. Free and ad-free: No subscription and no ads. You don't need an account unless you choose to save transcripts to Google Drive.