zarazhangrui/youtube-digest

What it solves

YouTube Digest transforms YouTube videos into structured learning resources. It solves the problem of manually scrubbing through long videos to find key information or struggling with language barriers when watching foreign-language content.

How it works

It is a Chrome extension that operates in a side panel. It uses the Supadata API to retrieve native YouTube transcripts and the DeepSeek V4 Flash model to provide AI-powered summaries, translations, and explanations. Users provide their own API keys for these services, and all data—including keys and notes—is stored locally in the browser.

Who it’s for

• Students and researchers who need to extract key ideas and quotes from long videos.
• Language learners who want to study transcripts with bilingual translations.
• Users who prefer a "bring-your-own-key" model for better data control and privacy.

Highlights

• AI-Powered Analysis: Generates overviews, chapters, and key quotes from video content.
• Language Learning Tools: Offers original, Simplified Chinese, or aligned bilingual transcript views.
• Interactive Navigation: Clicking timestamps in the transcript or AI notes jumps the video to that exact moment.
• Text Explanations: Allows users to select specific transcript text for AI-generated explanations.
• Privacy-First: No telemetry, analytics, or central accounts; all settings and notes are stored locally.