DejaVocab - 得记单词

DejaVocab — more than memorizing. Build your own language intuition network.

🌟 Key features

1️⃣ Immersive YouTube learning view
▸ A distraction-free fullscreen player replaces YouTube's default UI
▸ Bilingual subtitles (original + your native language) generated on demand
▸ Click any word for an instant dictionary card: definition, part of speech, examples
▸ Click a phrase for a natural-language explanation
▸ Built-in grammar panel breaks down tricky sentences
▸ Edit, copy or save a subtitle line with one click
▸ Re-play any line while you think, without losing your place

2️⃣ AI sidebar on any webpage
▸ Open the side panel from the toolbar on any site
▸ Translate the whole page — or just a selection
▸ Summarize long articles in seconds
▸ Explain a confusing sentence, idiom or jargon in plain English
▸ Rewrite selected text: simpler, more formal, shorter, longer
▸ Screenshot the screen and ask the AI about what's in it
▸ Full chat history so you can revisit older answers
▸ Organize saved items into Collections by topic or source

3️⃣ One vocabulary, across all your devices
▸ Words, phrases and saved sentences sync to your DejaVocab account
▸ Review the same vocabulary in the DejaVocab iOS and Android apps
▸ No more scattered notes in three different places

4️⃣ Intuition Network (Ultra & Lifetime)
▸ Semantic search across every phrase you've ever saved
▸ Find a phrase by the idea, not the exact wording
▸ Rediscover expressions you saved months ago when you need them today
▸ Runs privately on your own library — the model searches only your data

5️⃣ Built for real learners
▸ Works with any YouTube video that has a spoken track
▸ Works on articles, blogs, docs, forums — any webpage
▸ Clean English / Simplified Chinese UI, switchable at any time
▸ Free plan covers core lookup and daily AI usage
▸ Ultra / Lifetime plans unlock higher quotas, Intuition Network and priority support

🔒 Privacy
▸ The extension only runs when you trigger it (lookup, selection, screenshot, side panel)
▸ No page content is sent anywhere without an explicit action
▸ Saved vocabulary and AI chats are tied to your account and visible only to you
▸ We do not sell your data

🚀 Getting started
1. Install DejaVocab
2. Click the toolbar icon and sign in (or create a free account)
3. Open any YouTube video — it switches into the DejaVocab learning view automatically
4. On any other site, select text and open the side panel to translate, summarize, explain or rewrite

Website: https://dejavocab.com
Support: [email protected]