Subtitle Downloader for YouTube

manifest.json description

Download subtitle files from any YouTube video with a single click. ■ Features ▸ One-Click Subtitle Download Click the extension icon on any YouTube video page to see all available subtitle tracks. Choose a language and download instantly. ▸ Two Output Formats • SRT — The universal subtitle format, compatible with virtually any media player or editing tool. • JSON3 — YouTube's native caption format, useful for developers or advanced subtitle workflows. ▸ Auto-Translated Subtitles Select from all subtitle tracks on the video, including auto-generated captions. You can also use YouTube's auto-translation feature to download subtitles in any supported language. ▸ ZIP Export (Dual Subtitles + Thumbnail) Export a complete subtitle pack as a single ZIP file containing: • Up to 2 subtitle tracks (e.g., original language + translated language) • The video thumbnail image • A manifest.json with video metadata (title, channel, video ID, etc.) Perfect for archiving videos, offline study, content creation, or importing into subtitle-aware applications. ■ Privacy • Only activates on the YouTube tab you are currently viewing. • No data is sent to any third-party server. • All processing happens entirely within your browser. ■ Permissions • Active Tab: Used to read subtitle data from the currently open YouTube video. • youtube.com / i.ytimg.com access: Used to fetch subtitle files and video thumbnails directly from YouTube's servers.