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Summarize YouTube videos, translate captions, and watch with bilingual subtitles using your choice of AI YouTube AI Summary & Bilingual Subtitles helps you watch and understand YouTube videos more efficiently. View complete video transcripts, generate structured summaries, translate subtitles, and display synchronized bilingual subtitles directly in the YouTube player. Key Features • Video Summaries Generate a structured summary of a YouTube video with one click and view the result as it is generated. • Full Transcript Viewer Read the complete transcript in the side panel. Click a timestamp to jump directly to the corresponding part of the video. • Subtitle Translation Translate individual transcript sections or the entire transcript, then switch between the original text and the translation at any time. • Bilingual Subtitles Display original and translated subtitles together inside the YouTube player. Subtitles remain synchronized during playback and work in fullscreen and theater mode. • Learning Mode Display only the original subtitle by default, then reveal the translation when you hover over it. This mode is useful for watching foreign-language videos and practicing language comprehension. • Flexible Provider Selection Connect a supported third-party AI service using your own API key. The provider and model can be selected from the extension settings. • Local Cache Previously generated summaries and translations can be stored locally to reduce repeated requests. Privacy The extension uses an API key provided by you. API keys are stored locally by Chrome on your device. When you request a summary or translation, the relevant video transcript is sent directly to the service provider you selected. It is not routed through or stored on servers operated by the extension developer. This project is open source. You can review its source code and privacy practices at any time.
Aug 24, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.