SubDown – YouTube Transcript, Subtitle Downloader, Translate & AI
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Read, translate, and download YouTube transcripts. Bilingual subtitles, chapter view, sentence loop, AI prompts. Free, no login. SubDown — Read, translate, and study YouTube transcripts. Download subtitles or turn them into AI prompts. 🎯 TRANSCRIPTS & SUBTITLES • Read the full transcript in a side panel while you watch • Download in SRT, VTT, TXT — or Markdown with clickable timestamp deeplinks • Markdown export drops straight into Obsidian / Notion — click a timestamp to jump back to the exact second • Bilingual subtitles — original + translation side by side, 150+ languages (YouTube's built-in translation) • Copy to clipboard, optional [M:SS] timestamps 📖 READ & NAVIGATE • Side Panel — browse subtitles while watching; click any line to jump • Auto-highlight — the current line follows playback in real time • Search — find any word instantly • Chapter Digest — read the transcript grouped by video chapter, collapsible • Video chapters — one-click navigation 🤖 AI PROMPT PACK (no API, no cost) • One click builds a ready-to-paste prompt from the transcript • 5 templates: Summarize · Action items · Study notes · Blog draft · Social posts • Paste into your own ChatGPT / Claude / Gemini — long videos split into parts automatically 🎓 LANGUAGE LEARNING • Loop a sentence for shadowing / repeat practice • Slow (or fast) playback — 0.5× up to 3× • A-B loop — replay any section between two points • Hide translation, click to reveal — active recall • Search the transcript with match navigation 🔒 PRIVACY FIRST • Zero data collection — we never track you • Runs in your browser — no external servers, no account, no login • Minimal permissions — only accesses youtube.com 🆓 COMPLETELY FREE • No limits, no paywall, no ads — every feature is free 💡 WHO IS THIS FOR? • Language learners — loop, shadow, and read along with real videos • Note-takers & researchers — timestamped Markdown straight into your knowledge base • Content creators — transcripts and AI prompts for repurposing • Anyone who prefers reading to watching 📋 HOW TO USE 1. Go to any YouTube video 2. Click the SubDown icon in the toolbar (or press Alt+S) 3. Read, learn, download, or copy an AI prompt — done! 🌐 LANGUAGES English and Chinese UI. Subtitles in any language YouTube supports. Made with ❤️ by simplethumbnail.com
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