Privacy Policy Analyzer – Chrome Extension

Inspiration

What it does

The Privacy Policy Analyzer Chrome extension uses AI to simplify complex privacy policies, offering real-time summaries, risk analysis, and multilingual explanations. Users can instantly see how a website collects and uses their data — without reading lengthy legal text.

💡 Inspiration

Privacy policies are often filled with dense legal jargon that hides critical data usage details. With rising global concerns about data privacy, this extension helps users understand and compare privacy practices easily, giving them control and transparency online.

🧠 What I Learned

AI/NLP Integration – Applied Gemini AI for text summarization, translation, and tone simplification.

Chrome Extension Development – Implemented browser APIs, popup scripts, and background processing.

UX Design – Created an intuitive UI for complex AI outputs.

Local Privacy Handling – Designed dual AI modes (Online vs. Local) to balance convenience and data sovereignty.

🛠️ How I Built It

Technologies:

Frontend: HTML, CSS, JavaScript

AI Engine: Google Gemini API (for online AI mode)

Local AI Mode: On-device processing for private, offline summarization

APIs: Chrome Extensions API (content scripts, storage, and background events)

Key Features: ✅ AI Mode Selection – Choose between Online (Fast) or Local (Private) AI. 🌐 Multilingual Translation – Translate summaries into 25+ languages (including Swahili, Luganda, Yoruba, Amharic, etc.). 💬 Plain English Simplification – Instantly convert legal text into easy-to-read language. ⚠️ Privacy Risk Scoring – Visual score and icons showing how risky a site’s data practices are. 📊 Policy Comparison – Compare two sites’ privacy policies side-by-side. 🔔 Policy Alerts – Get notified when a website updates its privacy terms. ✏️ Proofreading Mode – Review and refine AI summaries for better readability.

⚙️ Challenges

Legal Complexity: Extracting meaningful data from unstructured, verbose policies.

Format Variety: Handling PDFs, HTML documents, and embedded links.

Performance: Ensuring lightweight, real-time analysis without slowing browsing.

Privacy Compliance: Guaranteeing zero user data collection by processing locally when possible.

🏁 Conclusion

The Privacy Policy Analyzer bridges the gap between legal language and user understanding — helping people make informed choices about their data privacy. It’s built with transparency, accessibility, and inclusivity at its core, enabling users worldwide to browse with confidence and clarity.

Built With

• chrome-extension-api
• gemini
• gemini-api
• gemini-nano
• google-cloud
• javascript
• node.js