TrackSight

See every analytics event. In real-time.

A Chrome extension that intercepts and inspects analytics events from 18+ popular trackers on any website.
Everything runs locally in your browser. No data ever leaves your machine.

What it does

TrackSight sits in your browser toolbar and DevTools panel. When you visit a page, it automatically detects analytics trackers and shows you every event they fire — in real-time, with full decoded payloads.

Dashboard view gives you an instant overview of all active trackers on the page:

Tracker name, tracking IDs, event counts, top events, first/last seen timestamps

Events view lets you dive into individual events with parsed parameters and raw request data.

Supported Trackers

Features

• Real-time interception of fetch, XHR, beacon, and pixel requests
• Dashboard with tracker cards showing IDs, event counts, and top events
• Grouped event list with search and per-tracker filtering
• Parsed event detail with human-readable parameters + raw request view
• DevTools panel with full feature parity to the popup
• Custom trackers via URL pattern matching
• Keyword rules for flexible request capture
• Export events as JSON or CSV
• Dark mode (light / dark / system)
• Bilingual UI (English / Russian)
• Zero data collection - everything stays in your browser

Installation

From source

# Clone the repo
git clone https://github.com/ComsiComsa/TrackSight.git
cd tracksight

# Install dependencies
bun install

# Build
bun run build

Then load into Chrome:

1. Open chrome://extensions
2. Enable Developer mode (top right)
3. Click Load unpacked
4. Select the dist/ folder

Development

bun run dev

Vite will watch for changes and rebuild automatically. Reload the extension in Chrome to see updates.

How it works

Page context (injected.js)
  | monkey-patches fetch / XHR / beacon / Image.src
  v
Content script
  | forwards intercepted requests via chrome.runtime
  v
Background service worker
  | runs requests through 18 built-in parsers + custom rules
  | stores parsed events per tab (in memory only)
  v
Popup / DevTools panel
  | receives events via chrome.runtime.connect port
  | renders dashboard, event list, event detail

All data lives in memory only and is discarded when the tab closes.

Tech Stack

Project Structure

src/
  background/       Service worker - event parsing & storage
  content/          Content script + page-context injector
  popup/            Popup UI (Svelte)
    components/     Dashboard, Events, EventDetail, Settings, etc.
  devtools/         DevTools panel (shares popup components)
  parsers/          18 tracker parsers + custom/keyword rules
  types/            TypeScript interfaces & translations
public/icons/       Extension icons

Built with AI

This project is developed with the help of Claude Code (Anthropic). AI assists with code generation, architecture decisions, and development workflow — while all design and product decisions are made by the developer.

Privacy

TrackSight does not collect, store, or transmit any data. Everything is processed locally in your browser. See PRIVACY.md for details.

License

MIT - ComsiComsa