TrackerLens

About

TrackerLens — Privacy Education, Not Just Blocking

Every website you visit loads dozens of invisible trackers — analytics scripts, ad pixels, social widgets, and fingerprinting tools that silently collect your browsing data. Most privacy tools silently block them without telling you what they do. TrackerLens is different: it detects, explains, and scores each tracker so you can make informed decisions.

🔍 Live Tracker Detection
Automatically identifies 27+ known trackers across 4 categories — Analytics (Google Analytics, Mixpanel, Hotjar), Advertising (Google Ads, DoubleClick, Facebook Pixel, Criteo, Taboola), Social (Facebook Connect, Twitter Widget, LinkedIn Insight), and Fingerprinting (Canvas, WebGL, AudioContext). Trackers are detected in real-time as you browse.

📊 Privacy Score (0–100, Grade A+ to F)
Every site gets an instant privacy score based on the number of trackers found, their risk levels, third-party cookie counts, and fingerprinting activity. Scores are weighted — a single high-risk advertising tracker impacts your score more than a low-risk analytics script.

🍪 Cookie Inspector
See every cookie set by the current site. Cookies are classified as Tracking, Essential, or Unknown, so you know exactly what's being stored and by whom. Filter by first-party vs. third-party to spot who's following you across sites.

🛡️ Fingerprinting Detection
Detects 7+ fingerprinting techniques including Canvas, WebGL, AudioContext, Font Enumeration, and Navigator property reads — methods that track you even without cookies.

🔗 Data Flow Visualization
An interactive graph shows exactly how your data flows: You → Website → Tracker Companies → Data Recipients. See the full picture of who gets your data and why.

⚖️ Educate, Then Decide
Every detected tracker comes with a plain-language explanation: what data it collects, why it's there, whether blocking it might break the site, and a recommendation. You learn, then you choose.

🚫 Category-Based Blocking
Block entire tracker categories (Advertising, Analytics, Social, Fingerprinting) with one toggle using Chrome's Declarative Net Request API. Or block individual trackers. Add sites to a whitelist when blocking breaks functionality.

📈 Local-Only Analytics & Weekly Reports
Track your privacy over time with score trends, top-tracked sites, and weekly privacy reports. All data stays on your device — zero telemetry, nothing is ever sent externally.

📤 Export Your Data
Export your privacy data as JSON, CSV, or PDF for your own records or analysis.

Key Features:
• 27+ known trackers in the database
• Privacy score with A+–F grading
• 9 detail tabs: Trackers, Cookies, Fingerprint, Permissions, Data Flow, Timeline, Reputation, Explanations
• Dark mode support
• Search & filter across all data
• Whitelist management
• DevTools panel for technical users
• Full options page with analytics dashboard
• 100% local — no data leaves your device
• Open source (MIT License)

Privacy Promise:
TrackerLens practices what it preaches. No telemetry. No external analytics. No data collection. Everything is stored locally on your device using Chrome Storage and IndexedDB. You can export or delete all data at any time.