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CaptionGo – Live Captions & Dual Subtitles version history - 4 versions

CaptionGo – Live Captions & Dual Subtitles by RabbitPair

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CaptionGo – Live Captions & Dual Subtitles version history - 4 versions

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 1.0.28

    Released Sep 11, 2026 - 2.93 MB
    Works with firefox 140.0 and later, android 142.0 and later
    • Subtitle navigation buttons: previous, replay, and next — quickly browse through subtitle content (shortcuts A / S / D)
    • Subtitle auto-pause: automatically pauses the video at the end of each subtitle line for sentence-by-sentence study (shortcut Q)
    • Copy subtitle button: copy the current subtitle text with one click (shortcut Ctrl+C)
    • Subtitle drag handle: hover over subtitles to reveal a drag handle for repositioning
    • Caption width control: drag a slider in caption style settings to adjust maximum subtitle width (50%–100%) (Pro)
    • 7 new font options: Poppins, Quicksand, Sofia Sans, DM Sans, Montserrat, Open Sans, and Lato
    • Thin (100) and Extra Light (200) font weight options — weight menu now shows numeric values
    • Uscreen video player support
    • Upgraded to variable fonts: font weights transition smoothly from 100 to 900 for a more refined look
    • Updated caption color palette with softer, modern tones for improved readability and visual comfort
    • Better multi-line bilingual subtitle positioning: subtitles no longer overflow the video bottom or get obscured by controls — multi-line content grows upward
    • Smoother caption drag interaction with improved stability
    • Better compatibility for menus and popups being hidden on some sites
    • More reliable auto-upgrade from floating button to control bar button
    • Fixed caption position showing 10% in the menu when set to 0%
    • Fixed caption position flickering on hover

    Source code released under All Rights Reserved

    Download Firefox and get the extension
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  • Older versions

    Version 1.0.27

    Released Sep 9, 2026 - 2.97 MB
    Works with firefox 140.0 and later, android 142.0 and later
    • Crunchyroll subtitle support (Pro): Crunchyroll uses hard-rendered subtitles, so the free page-subtitle mode is not available
    • 20+ new player integrations: including Vimeo, BBC iPlayer, Wistia, ArtPlayer, NPlayer, Shaka Player, Bitmovin, Clappr, ARD/ZDF Mediathek, and more
    • Caption track type recognition: automatically distinguishes between standard subtitles, CC/SDH closed captions, and ASR auto-generated subtitles, with [CC] / [ASR] badges in the menu
    • Smart caption selection: prefers standard dialogue subtitles for translation to improve quality
    • Better button compatibility: adapts to more player layouts and Shadow DOM scenarios
    • Floating button fallback for unconfigured sites: reduces wait time for subtitle access
    • Smarter video change detection and caption caching: reduces unnecessary subtitle reloads
    • Improved subtitle recognition on Bilibili, Disney+, Hulu, VK Video, MediaElement.js, and more

    Source code released under All Rights Reserved

    Download file

  • Version 1.0.26

    Released Aug 28, 2026 - 2.96 MB
    Works with firefox 140.0 and later, android 142.0 and later
    • Better bilingual subtitle stability: automatically retries when translation temporarily fails, preventing subtitles from showing only the original language for extended periods
    • Faster subtitle recovery after seeking: bilingual subtitles reappear more quickly after scrubbing the progress bar
    • Improved SPA site support: bilingual subtitles now automatically restart after page navigation on sites like SVT Play
    • Clearer language menu labels: "Native Language" renamed to "Translate to", "Learning Language" renamed to "Subtitle Language" for better clarity
    • Fixed bilingual subtitles stopping on some sites after long periods without subtitle content
    • Fixed outdated subtitle container selectors for SVT Play
    • Live Captions (ASR) is now a PRO-only feature: Due to rising speech recognition service costs, Live Captions now requires a PRO membership. We sincerely apologize for the inconvenience. PRO members can continue using both the built-in cloud recognition and custom API key modes

    Source code released under All Rights Reserved

    Download file

  • Version 1.0.25

    Released Aug 26, 2026 - 2.97 MB
    Works with firefox 140.0 and later, android 142.0 and later
    • Netflix smart subtitle preloading: automatically downloads and caches both native and learning language subtitles simultaneously when watching Netflix, eliminating translation wait times
    • New "Learning Language" setting in the menu, with clear descriptions for Source Language, Native Language, and Learning Language
    • Prefer human-translated subtitles: when official subtitles in your native language are available, they are used directly instead of calling a translation service
    • Fixed Simplified Chinese subtitles occasionally displaying as Traditional Chinese when set as native language

    Source code released under All Rights Reserved

    Download file