Subtitle Downloader for YouTube

About

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.