CaptionGo v1.0 Release Notes

First release of CaptionGo — bilingual subtitles and real-time AI captions for any video, on PC and mobile browsers.

• Bilingual subtitle support for Reddit videos
• Bilingual subtitle support for YouTube embedded players (iframe embed)

• Fixed duplicate subtitles when both bilingual captions and the player's native captions are enabled

• Mux Player support for education platforms like codewithantonio.com, m.academy, and laracasts.com
• Bilingual subtitle translation for non-traditional learning platforms like Scrimba

• Fixed subtitle button not showing on certain video players

• Expanded subtitle support for more video sites (BBC, Paramount+, Plex, MUBI, Naver TV, Weverse, HIDIVE, Peacock, NowTV, etc.)

• Fixed subtitles not displaying correctly on certain news sites (e.g. ABC News)
• Fixed "Page Subtitle" mode not showing subtitles on some sites

• Better subtitle detection on sites where the player loads slowly

• Shows a "Translating..." placeholder during first translation attempt, so you know translation is in progress
• Automatically notifies you when the translation service is slow to respond
• Proactively shows "Translation skipped" when the video language matches your target language

• Fixed custom fonts not working correctly on Firefox
• Fixed button position showing incorrectly on some sites

• Fixed X (Twitter) not correctly selecting track subtitles
• Fixed membership dialog being obscured

• Floating button now shows on hover and hides automatically when the cursor moves away, reducing video obstruction
• Removed the always-visible browser-side floating button; now shows a quick-access button on each video instead

• Fixed touch interaction issues with the floating button on mobile devices
• Fixed login button requiring long press to respond when using with Gestify in mobile fullscreen
• Fixed multiple login windows opening when multiple RabbitPair extensions are installed

• Fixed subtitles being lost after exiting fullscreen, unable to recover when re-entering fullscreen
• Fixed fullscreen menu button not showing or appearing in wrong position on certain websites
• Fixed fullscreen menu button not showing after navigating to a new video within the same page

• Extended subtitle cache duration for uninterrupted viewing of long videos

• Fixed an issue where the CaptionGo menu button could not be tapped when watching video in fullscreen on Android Firefox
• Fixed bilingual subtitle detection failing on certain websites (e.g. React/SPA-based streaming sites)
• Fixed subtitle loading failures on Firefox
• Fixed original subtitles still showing after bilingual captions are enabled

• Improved subtitle experience on X (Twitter) timeline videos
• Expanded subtitle support for more websites

• Bilingual subtitles: Automatically show "original + translation" on web videos, or view translation-only or original-only; works on major platforms like YouTube, Netflix, Disney+, Hulu, and Bilibili as well as ordinary web videos, and hides the site's own subtitles to avoid overlap.
• Smart sentences: Automatically merges fragmented, word-by-word captions into smooth, complete sentences.
• Real-time voice captions: Turn speech into subtitles and translate them even for videos without captions. Use the built-in service for free, or add your own Deepgram key / connect a local transcription backend — 50+ languages supported.
• Multiple translation services: Built-in free translation via Google, Microsoft, Yandex, and Chrome; or connect AI models like OpenAI, Claude, Gemini, and Ollama with a customizable translation style. Automatically falls back to a backup service when the current one is unavailable.
• Meeting captions: Automatically display a translation beneath the captions in Zoom, Microsoft Teams, Google Meet, and Twitter Spaces (off by default; turn on the meeting's own captions first).
• Rich caption styling: Freely adjust font, size, color, stroke, background, and position; style the original and translation separately; drag to reposition and remember it per site.
• Floating button: A draggable, collapsible floating button on any web page lets you turn captions on anytime, and can be hidden on specific sites.
• Mobile fullscreen support: Captions and settings work the same way when watching video in fullscreen on mobile browsers.
• Keyboard shortcuts: Toggle bilingual subtitles and live voice captions with one key; shortcuts are customizable in your browser's extension shortcut settings.
• Cloud sync (PRO): End-to-end encrypted sync of your settings and API keys — switch computers or sign in on mobile with the same account to sync automatically, with no reconfiguration.
• Account & membership: Sign-in, trial, and subscription supported.
• Multi-browser & multilingual: Supports Chrome, Edge, Whale, and Firefox (including Android), with a multilingual interface.
• X (Twitter) timeline video bilingual subtitles: a subtitle button appears at the top-right corner of each video, automatically follows the currently playing video as you scroll, and supports auto-enable in site settings.