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47 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
What our analysis found
CaptiPrep is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites and can inject scripts into pages. It comes from a publisher with 2 extensions and was last updated in August 2025.
CaptiPrep Chrome extension security report
ID: jgbcfnmpjaflngdajjjnlehfkfohlmfl
Extension Info & Metadata
Publisher Contextual Analysis
- Author
- kronos13v@gmail.com
- Privacy
- Privacy Policy
- Help
- Help Center
- MX records exist
- Yes
- Domain exists
- Yes
- Is disposable
- No
- Is role-based
- No
- Mailbox exists
- Yes
Screenshots & videos
Install growth
Sensitive Domain Access
This extension has access to the following sensitive domains:
- https://*.googlevideo.com/*
- https://generativelanguage.googleapis.com/*
47 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
About this extension
Extract YouTube captions, pick key words/phrases with LLM, and generate study cards.
Read the publisher’s full description
CaptiPrep is an AI-assisted tool for English learners that helps you preview key vocabulary and expressions from subtitles before watching a YouTube video. Learn first, watch later — more efficient and less boring. Main features - Subtitle preview: automatically extracts key words and phrases from English subtitles. - Smart filtering: AI pre-filters combined with manual selection to produce a study list that fits you. - One-click card creation: generate study cards with definitions, phonetics, example sentences and notes. - In-page overlay: operate directly on the YouTube page without switching away. - Vocabulary notebook: saves study history and favorites; supports selecting, deleting and exporting for review. - Privacy-first local storage: API keys and related settings are stored only in the local options page. How to use 1. Install the extension and open a YouTube video that has English subtitles. 2. Click the extension icon to open the panel. 3. Extract subtitles → choose words/phrases → generate cards → study. 4. Use the entry on the right to open the “Vocabulary Notebook” for review and export. Settings - Configure LLM provider, model and API key on the Options page (stored locally). - Supported providers: OpenAI, Anthropic Claude, Google Gemini, and OpenAI-compatible providers. - For best results, use videos with English subtitles. With CaptiPrep, turn “watching videos to learn English” into a planned, reviewable, context-based, and efficient learning workflow.
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URLs
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47 indicators in this extension
Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.
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